Formula for 3 business days from a given date

How do I calculate 3 business days from a given date?

DateAdd(“day”, (In(Weekday([myDATE]),2,3), 3, In(Weekday([myDATE]),4,5,6,7), 5, 4), [myDATE])

This will add 3 business days to [myDate]. Basically, if myDate is Monday or Tuesday, add 3 days to it. If Wed thru Sat - add 5 days, if Sunday - add 4 days.