Question 1102165
In English, you probably mean:
You sign up to volunteer work ever fourth Sunday of each month at a soup kitchen for the homeless. On what dates of the month might the fourth Sunday fall?
If the 1st is a Sunday 1,8,15,(22)
If the 2nd is a Sunday 2,9,16,(23)
If the 3rd is a Sunday 3,10,17,(24)
If the 4th is a Sunday 4,11,18,(25)
If the 5th is a Sunday 5,12,19,(26)
If the 6th is a Sunday 6,13,20,(27)
If the 7th is a Sunday 7,14,21,(28)

22nd through 28th