Finding the Fourth Proportional to 12,552.76, 17,321.54 and 7,515.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,552.76 : 17,321.54 = 7,515.96 : x
2. Step 2: Convert to fraction form
   12,552.76/17,321.54 = 7,515.96/x
3. Step 3: Cross multiply
   12,552.76x = 17,321.54 × 7,515.96
4. Step 4: Simplify right side
   12,552.76x = 130,188,001.78
5. Step 5: Solve for x
   x = 130,188,001.78/12,552.76
6. Step 6: Final answer
   x = 10,371.27