Beach Blanket Barn has pretax cost of debt of $8\%,$ cost of common equity of $11\%,$ and $7\%$ preferred stock that currently sells for $$106.$ Their target capital structure is $30\%$ debt, $60\%$ equity and $10\%$ preferred stock. The current corporate tax rate is $28\%.$ The current market value of Beach is $$4$ million. What is Beachs WACC? Answer is $7\mathrm{.}43.$ How do I get this?