Finding the Fourth Proportional to 12,269.96, 18,397.90 and 5,689.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,269.96 : 18,397.90 = 5,689.72 : x
2. Step 2: Convert to fraction form
   12,269.96/18,397.90 = 5,689.72/x
3. Step 3: Cross multiply
   12,269.96x = 18,397.90 × 5,689.72
4. Step 4: Simplify right side
   12,269.96x = 104,678,899.59
5. Step 5: Solve for x
   x = 104,678,899.59/12,269.96
6. Step 6: Final answer
   x = 8,531.32