Finding the Fourth Proportional to 16,513,771.78, 22,789,057.86 and 9,171,603.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,513,771.78 : 22,789,057.86 = 9,171,603.60 : x
2. Step 2: Convert to fraction form
   16,513,771.78/22,789,057.86 = 9,171,603.60/x
3. Step 3: Cross multiply
   16,513,771.78x = 22,789,057.86 × 9,171,603.60
4. Step 4: Simplify right side
   16,513,771.78x = 209,012,205,109,384.28
5. Step 5: Solve for x
   x = 209,012,205,109,384.28/16,513,771.78
6. Step 6: Final answer
   x = 12,656,842.29