Finding the Fourth Proportional to 9,216.53, 12,719.02 and 5,440.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,216.53 : 12,719.02 = 5,440.62 : x
2. Step 2: Convert to fraction form
   9,216.53/12,719.02 = 5,440.62/x
3. Step 3: Cross multiply
   9,216.53x = 12,719.02 × 5,440.62
4. Step 4: Simplify right side
   9,216.53x = 69,199,354.59
5. Step 5: Solve for x
   x = 69,199,354.59/9,216.53
6. Step 6: Final answer
   x = 7,508.18