Finding the Fourth Proportional to 11,099.46, 15,303.42 and 9,327.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,099.46 : 15,303.42 = 9,327.18 : x
2. Step 2: Convert to fraction form
   11,099.46/15,303.42 = 9,327.18/x
3. Step 3: Cross multiply
   11,099.46x = 15,303.42 × 9,327.18
4. Step 4: Simplify right side
   11,099.46x = 142,737,752.96
5. Step 5: Solve for x
   x = 142,737,752.96/11,099.46
6. Step 6: Final answer
   x = 12,859.88