Finding the Fourth Proportional to 21,650,242.72, 29,877,332.43 and 12,948,413.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,650,242.72 : 29,877,332.43 = 12,948,413.98 : x
2. Step 2: Convert to fraction form
   21,650,242.72/29,877,332.43 = 12,948,413.98/x
3. Step 3: Cross multiply
   21,650,242.72x = 29,877,332.43 × 12,948,413.98
4. Step 4: Simplify right side
   21,650,242.72x = 386,864,068,921,719.38
5. Step 5: Solve for x
   x = 386,864,068,921,719.38/21,650,242.72
6. Step 6: Final answer
   x = 17,868,809.78