Finding the Fourth Proportional to 21,109,538.18, 31,684,782.98 and 10,187,414.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,109,538.18 : 31,684,782.98 = 10,187,414.16 : x
2. Step 2: Convert to fraction form
   21,109,538.18/31,684,782.98 = 10,187,414.16/x
3. Step 3: Cross multiply
   21,109,538.18x = 31,684,782.98 × 10,187,414.16
4. Step 4: Simplify right side
   21,109,538.18x = 322,786,006,786,979
5. Step 5: Solve for x
   x = 322,786,006,786,979/21,109,538.18
6. Step 6: Final answer
   x = 15,291,002.77