9.7796 V

Solving the right side which is a series circuit (ignore the 7Ω) Rtot= 8+9+6.9696 = 23.9696Ω I = V/R = 9.7796/23.9696 = .408A which is the reading on A4 And finally, V3  = IR = .408*9 = 3.6720V

8Ω

7Ω

9Ω

V3

A4

6.9696Ω