XYZ corp. has 20,000 shares of common stocks outstanding that are currently traded for $13 per share and have a rate of return of 5.10%. They also have 4,000 shares of 6.05% preferred stocks that are selling for $69.5 per share. The preferred stock has a par value of $100. Finally, they have 7,000 bonds outstanding that mature in 11 years, have par value (face value) of $1,000, and sell for 97.5% of par. The yield-to-maturity on the debt is 3.80%.

What is the XYZ's weighted average cost of capital if the tax rate is 21%?