Two parallel wires carry currents as shown in the figure below; current $1$ is $I_1=4\mathrm{.}1A,$ current $2$ is $I_2=2\mathrm{.}8A.$ The wires are separated by a distance $x=11\mathrm{.}2cm.$ Find the magnitude of the total magnetic field at point P $,$ which is a distance $y=6\mathrm{.}7cm$ above wire $2.$

Report your answer in units of microtesla, ${10}^{-6}T.$ For example, if your calculations produce a value of $1\mathrm{.}23{10}^{-5}T,$ first convert units to $12\mathrm{.}3{10}^{-6}T,$ then enter your answer as $12\mathrm{.}3.$