Finding the Fourth Proportional to 8,758.43, 12,084.49 and 5,618.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.43 : 12,084.49 = 5,618.87 : x
2. Step 2: Convert to fraction form
   8,758.43/12,084.49 = 5,618.87/x
3. Step 3: Cross multiply
   8,758.43x = 12,084.49 × 5,618.87
4. Step 4: Simplify right side
   8,758.43x = 67,901,178.33
5. Step 5: Solve for x
   x = 67,901,178.33/8,758.43
6. Step 6: Final answer
   x = 7,752.67