Finding the Fourth Proportional to 14,629.52, 20,188.71 and 7,915.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,629.52 : 20,188.71 = 7,915.15 : x
2. Step 2: Convert to fraction form
   14,629.52/20,188.71 = 7,915.15/x
3. Step 3: Cross multiply
   14,629.52x = 20,188.71 × 7,915.15
4. Step 4: Simplify right side
   14,629.52x = 159,796,667.96
5. Step 5: Solve for x
   x = 159,796,667.96/14,629.52
6. Step 6: Final answer
   x = 10,922.89