Finding the Fourth Proportional to 9,116.88, 12,581.10 and 5,339.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.88 : 12,581.10 = 5,339.58 : x
2. Step 2: Convert to fraction form
   9,116.88/12,581.10 = 5,339.58/x
3. Step 3: Cross multiply
   9,116.88x = 12,581.10 × 5,339.58
4. Step 4: Simplify right side
   9,116.88x = 67,177,789.94
5. Step 5: Solve for x
   x = 67,177,789.94/9,116.88
6. Step 6: Final answer
   x = 7,368.51