Answer:
5.86%
Step-by-step explanation:
In this question, we use the RATE formula i.e to be shown in the spreadsheet below:
Given that, 
Present value = $1066.57
Future value or Face value = $1,000 
PMT = 1,000 × 6.4% ÷ 2 = $32
NPER = 22 years × 2 = 44 years 
The formula is shown below: 
= Rate(NPER;PMT;-PV;FV;type) 
The present value come in negative 
So, after solving this, 
The yield to maturity is 
= 2.93% × 2
= 5.86%