Use mesh analysis to find $V_o$ in the circuit shown given that $V_1 = 9 V, R_1 = 4 k\Omega, R_2 = 2 k\Omega, R_3 = 5 k\Omega, R_4 = 6 k\Omega$ and $R_5 = 4 k\Omega.$

$I_2 =$ $mA$
$V_o =$ $V$