Finding the Fourth Proportional to 21,389,025.24, 29,484,200.88 and 13,113,767.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,389,025.24 : 29,484,200.88 = 13,113,767.16 : x
2. Step 2: Convert to fraction form
   21,389,025.24/29,484,200.88 = 13,113,767.16/x
3. Step 3: Cross multiply
   21,389,025.24x = 29,484,200.88 × 13,113,767.16
4. Step 4: Simplify right side
   21,389,025.24x = 386,648,945,238,987.06
5. Step 5: Solve for x
   x = 386,648,945,238,987.06/21,389,025.24
6. Step 6: Final answer
   x = 18,076,978.31