Finding the Fourth Proportional to 9,761.52, 14,631.72 and 3,915.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,761.52 : 14,631.72 = 3,915.12 : x
2. Step 2: Convert to fraction form
   9,761.52/14,631.72 = 3,915.12/x
3. Step 3: Cross multiply
   9,761.52x = 14,631.72 × 3,915.12
4. Step 4: Simplify right side
   9,761.52x = 57,284,939.61
5. Step 5: Solve for x
   x = 57,284,939.61/9,761.52
6. Step 6: Final answer
   x = 5,868.44