From the Wikipedia:

Released to manufacturing: April 29, 2005
Latest release 10.4.11 / November 14, 2007
Platforms IA-32, x86-64, PowerPC
Preceded by Mac OS X 10.3 Panther
Succeeded by Mac OS X 10.5 Leopard
Support status
Unsupported as of September 2009, Safari support ended November 2010.

About
Mac OS X 10.4 Tiger is the fifth major release of Mac OS X (now named macOS), Apple's desktop and server operating system for Mac computers. Tiger was released to the public on April 29, 2005 for US$129.95 as the successor to Mac OS X 10.3 Panther. Some of the new features included a fast searching system called Spotlight, a new version of the Safari web browser, Dashboard, a new ‘Unified’ theme, and improved support for 64-bit addressing on Power Mac G5s. Mac OS X 10.4 Tiger shocked executives at Microsoft by offering a number of features, such as fast file searching and improved graphics processing, that Microsoft had spent several years struggling to add to Windows with acceptable performance.

IBM PowerPC

System requirements
You must have a Macintosh computer with:
• a PowerPC G3, G4, or G5 processor
• a DVD drive
• built-in FireWire
• at least 256 MB of RAM
• a built-in display or a display connected to an Apple-supplied video card supported
by your computer
• at least 3 GB of disk space available, or 4 GB if you install the developer tools
If you see a message in the Installer that you do not have enough disk space to install Mac OS X, you can deselect items to save space. To deselect items, click Custom Install in the Easy Install panel.

Updating your computer’s firmware
You may need to update your computer’s firmware. It’s best to update the firmware before installing Mac OS X.

If you don’t do this, you may see a message that you need to update your computer’s firmware when you start the Installer. To update the firmware, you will need to quit the Installer and restart your computer using your current startup disk, then check the Software Updates website.
If you have problems with your computer after installing this version of Mac OS X, you might need to update the firmware even though you did not see a message when you installed the software. Check the Software Updates website for recent firmware updates for your computer.

Emulating this? It should run fine under: QEMU