Finding the Fourth Proportional to 9,216.32, 12,718.88 and 5,490.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,216.32 : 12,718.88 = 5,490.24 : x
2. Step 2: Convert to fraction form
   9,216.32/12,718.88 = 5,490.24/x
3. Step 3: Cross multiply
   9,216.32x = 12,718.88 × 5,490.24
4. Step 4: Simplify right side
   9,216.32x = 69,829,703.73
5. Step 5: Solve for x
   x = 69,829,703.73/9,216.32
6. Step 6: Final answer
   x = 7,576.74