Finding the Fourth Proportional to 12,557.89, 17,328.41 and 7,452.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,557.89 : 17,328.41 = 7,452.61 : x
2. Step 2: Convert to fraction form
   12,557.89/17,328.41 = 7,452.61/x
3. Step 3: Cross multiply
   12,557.89x = 17,328.41 × 7,452.61
4. Step 4: Simplify right side
   12,557.89x = 129,141,808.05
5. Step 5: Solve for x
   x = 129,141,808.05/12,557.89
6. Step 6: Final answer
   x = 10,283.72