Finding the Fourth Proportional to 12,716.50, 17,549.28 and 7,411.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,716.50 : 17,549.28 = 7,411.78 : x
2. Step 2: Convert to fraction form
   12,716.50/17,549.28 = 7,411.78/x
3. Step 3: Cross multiply
   12,716.50x = 17,549.28 × 7,411.78
4. Step 4: Simplify right side
   12,716.50x = 130,071,402.52
5. Step 5: Solve for x
   x = 130,071,402.52/12,716.50
6. Step 6: Final answer
   x = 10,228.55