Finding the Fourth Proportional to 9,915.20, 14,759.52 and 9,767.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.20 : 14,759.52 = 9,767.52 : x
2. Step 2: Convert to fraction form
   9,915.20/14,759.52 = 9,767.52/x
3. Step 3: Cross multiply
   9,915.20x = 14,759.52 × 9,767.52
4. Step 4: Simplify right side
   9,915.20x = 144,163,906.79
5. Step 5: Solve for x
   x = 144,163,906.79/9,915.20
6. Step 6: Final answer
   x = 14,539.69