Use the diagram shown above.

Given

$D_1=9ft$

$D_2=6ft$

$D_3=4ft$

$W=100\frac{\text{\#}}{f}t$

$P=200$#

Solve for the internal shear at $x.$

Note: Enter the numerical value only for your calculation results. You'll be asked to specify the unit for your calculation result in the

following question. $($This is due to Canvas' lack of ability to require units for calculation question.$)$