Finding the Fourth Proportional to 8,367.62, 12,545.27 and 3,988.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,367.62 : 12,545.27 = 3,988.15 : x
2. Step 2: Convert to fraction form
   8,367.62/12,545.27 = 3,988.15/x
3. Step 3: Cross multiply
   8,367.62x = 12,545.27 × 3,988.15
4. Step 4: Simplify right side
   8,367.62x = 50,032,428.52
5. Step 5: Solve for x
   x = 50,032,428.52/8,367.62
6. Step 6: Final answer
   x = 5,979.29