Finding the Fourth Proportional to 9,315.76, 13,960.88 and 5,149.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.76 : 13,960.88 = 5,149.52 : x
2. Step 2: Convert to fraction form
   9,315.76/13,960.88 = 5,149.52/x
3. Step 3: Cross multiply
   9,315.76x = 13,960.88 × 5,149.52
4. Step 4: Simplify right side
   9,315.76x = 71,891,830.78
5. Step 5: Solve for x
   x = 71,891,830.78/9,315.76
6. Step 6: Final answer
   x = 7,717.23