Finding the Fourth Proportional to 9,116.60, 12,584.04 and 5,340.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.60 : 12,584.04 = 5,340.96 : x
2. Step 2: Convert to fraction form
   9,116.60/12,584.04 = 5,340.96/x
3. Step 3: Cross multiply
   9,116.60x = 12,584.04 × 5,340.96
4. Step 4: Simplify right side
   9,116.60x = 67,210,854.28
5. Step 5: Solve for x
   x = 67,210,854.28/9,116.60
6. Step 6: Final answer
   x = 7,372.36