Finding the Fourth Proportional to 11,139.55, 16,706.59 and 4,567.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,139.55 : 16,706.59 = 4,567.61 : x
2. Step 2: Convert to fraction form
   11,139.55/16,706.59 = 4,567.61/x
3. Step 3: Cross multiply
   11,139.55x = 16,706.59 × 4,567.61
4. Step 4: Simplify right side
   11,139.55x = 76,309,217.90
5. Step 5: Solve for x
   x = 76,309,217.90/11,139.55
6. Step 6: Final answer
   x = 6,850.30