Finding the Fourth Proportional to 16,915.91, 25,356.98 and 13,963.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,915.91 : 25,356.98 = 13,963.46 : x
2. Step 2: Convert to fraction form
   16,915.91/25,356.98 = 13,963.46/x
3. Step 3: Cross multiply
   16,915.91x = 25,356.98 × 13,963.46
4. Step 4: Simplify right side
   16,915.91x = 354,071,084.07
5. Step 5: Solve for x
   x = 354,071,084.07/16,915.91
6. Step 6: Final answer
   x = 20,931.25