Finding the Fourth Proportional to 12,359.52, 17,038.28 and 8,816.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,359.52 : 17,038.28 = 8,816.58 : x
2. Step 2: Convert to fraction form
   12,359.52/17,038.28 = 8,816.58/x
3. Step 3: Cross multiply
   12,359.52x = 17,038.28 × 8,816.58
4. Step 4: Simplify right side
   12,359.52x = 150,219,380.72
5. Step 5: Solve for x
   x = 150,219,380.72/12,359.52
6. Step 6: Final answer
   x = 12,154.14