Finding the Fourth Proportional to 12,089.68, 18,103.52 and 7,162.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,089.68 : 18,103.52 = 7,162.85 : x
2. Step 2: Convert to fraction form
   12,089.68/18,103.52 = 7,162.85/x
3. Step 3: Cross multiply
   12,089.68x = 18,103.52 × 7,162.85
4. Step 4: Simplify right side
   12,089.68x = 129,672,861.40
5. Step 5: Solve for x
   x = 129,672,861.40/12,089.68
6. Step 6: Final answer
   x = 10,725.92