Finding the Fourth Proportional to 21,359,229.25, 32,025,926.40 and 8,389,854.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,359,229.25 : 32,025,926.40 = 8,389,854.31 : x
2. Step 2: Convert to fraction form
   21,359,229.25/32,025,926.40 = 8,389,854.31/x
3. Step 3: Cross multiply
   21,359,229.25x = 32,025,926.40 × 8,389,854.31
4. Step 4: Simplify right side
   21,359,229.25x = 268,692,856,638,782.78
5. Step 5: Solve for x
   x = 268,692,856,638,782.78/21,359,229.25
6. Step 6: Final answer
   x = 12,579,707.51