Bramble Company is constructing a building. Construction began on February $1$ and was completed

on December $31.$ Expenditures were $$1,956,000$ on March $1,$$$1,236,000$ on June $1,$ and

$$3,075,280$ on December $31.$

Bramble Company borrowed $$1,028,330$ on March $1$ on a $5-$year, $13\%$ note to help finance

construction of the building. In addition, the company had outstanding all year a $10\%,5-$year,

$$2,199,600$ note payable and an $11\%,4-$year, $$3,483,000$ note payable. Compute the weighted$-$

average interest rate used for interest capitalization purposes. $($Round answer to $2$ decimal places, e$.$g$.$

$7\mathrm{.}58\%.)$

Weighted$-$average interest rate