Finding the Fourth Proportional to 9,116.75, 12,581.19 and 5,342.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.75 : 12,581.19 = 5,342.15 : x
2. Step 2: Convert to fraction form
   9,116.75/12,581.19 = 5,342.15/x
3. Step 3: Cross multiply
   9,116.75x = 12,581.19 × 5,342.15
4. Step 4: Simplify right side
   9,116.75x = 67,210,635.61
5. Step 5: Solve for x
   x = 67,210,635.61/9,116.75
6. Step 6: Final answer
   x = 7,372.21