On March 31, 2024, Southwest Gas leased equipment from a supplier and agreed to pay $380,000 annually for 21 years beginning March 31, 2025. Generally accepted accounting principles require that a liability be recorded for this lease agreement for the present value of scheduled payments. Accordingly, at inception of the lease, Southwest recorded a $4,470,349 lease liability. Required: Determine the interest rate implicit in the lease agreement. Note: Use tables, Excel, or a financial calculator. (FV of $1, PV of $1, FVA of $1, PVA of $1, FVAD of $1 and PVAD of $1)