Hole saw size for 4" corrugated pipe

I'm trying to connect a 4" corrugated (and perforated) HDPE plastic drain pipe into a 12" corrugated hdpe pipe.

what is the proper HOLE SAW bit to use for this?

Notes:

• OD of 4" pipe is ~4.78"
• "thickness" (OD-ID) of 12" pipe is ~2.3"