Finding the Fourth Proportional to 12,099.27, 18,124.61 and 5,516.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,099.27 : 18,124.61 = 5,516.40 : x
2. Step 2: Convert to fraction form
   12,099.27/18,124.61 = 5,516.40/x
3. Step 3: Cross multiply
   12,099.27x = 18,124.61 × 5,516.40
4. Step 4: Simplify right side
   12,099.27x = 99,982,670.02
5. Step 5: Solve for x
   x = 99,982,670.02/12,099.27
6. Step 6: Final answer
   x = 8,263.53