Finding the Fourth Proportional to 8,986.57, 12,401.39 and 5,007.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,986.57 : 12,401.39 = 5,007.61 : x
2. Step 2: Convert to fraction form
   8,986.57/12,401.39 = 5,007.61/x
3. Step 3: Cross multiply
   8,986.57x = 12,401.39 × 5,007.61
4. Step 4: Simplify right side
   8,986.57x = 62,101,299.54
5. Step 5: Solve for x
   x = 62,101,299.54/8,986.57
6. Step 6: Final answer
   x = 6,910.46