Finding the Fourth Proportional to 12,616.88, 17,411.04 and 7,311.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,616.88 : 17,411.04 = 7,311.56 : x
2. Step 2: Convert to fraction form
   12,616.88/17,411.04 = 7,311.56/x
3. Step 3: Cross multiply
   12,616.88x = 17,411.04 × 7,311.56
4. Step 4: Simplify right side
   12,616.88x = 127,301,863.62
5. Step 5: Solve for x
   x = 127,301,863.62/12,616.88
6. Step 6: Final answer
   x = 10,089.81