Finding the Fourth Proportional to 21,132.72, 31,625.28 and 16,962.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,132.72 : 31,625.28 = 16,962.48 : x
2. Step 2: Convert to fraction form
   21,132.72/31,625.28 = 16,962.48/x
3. Step 3: Cross multiply
   21,132.72x = 31,625.28 × 16,962.48
4. Step 4: Simplify right side
   21,132.72x = 536,443,179.49
5. Step 5: Solve for x
   x = 536,443,179.49/21,132.72
6. Step 6: Final answer
   x = 25,384.48