Finding the Fourth Proportional to 8,412,066.56, 12,644,441.60 and 5,551,816

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412,066.56 : 12,644,441.60 = 5,551,816 : x
2. Step 2: Convert to fraction form
   8,412,066.56/12,644,441.60 = 5,551,816/x
3. Step 3: Cross multiply
   8,412,066.56x = 12,644,441.60 × 5,551,816
4. Step 4: Simplify right side
   8,412,066.56x = 70,199,613,185,945.60
5. Step 5: Solve for x
   x = 70,199,613,185,945.60/8,412,066.56
6. Step 6: Final answer
   x = 8,345,109.10