Finding the Fourth Proportional to 8,128.69, 11,217.89 and 4,592.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.69 : 11,217.89 = 4,592.43 : x
2. Step 2: Convert to fraction form
   8,128.69/11,217.89 = 4,592.43/x
3. Step 3: Cross multiply
   8,128.69x = 11,217.89 × 4,592.43
4. Step 4: Simplify right side
   8,128.69x = 51,517,386.05
5. Step 5: Solve for x
   x = 51,517,386.05/8,128.69
6. Step 6: Final answer
   x = 6,337.73