Finding the Fourth Proportional to 8,569.38, 12,839.38 and 5,752.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,569.38 : 12,839.38 = 5,752.94 : x
2. Step 2: Convert to fraction form
   8,569.38/12,839.38 = 5,752.94/x
3. Step 3: Cross multiply
   8,569.38x = 12,839.38 × 5,752.94
4. Step 4: Simplify right side
   8,569.38x = 73,864,182.78
5. Step 5: Solve for x
   x = 73,864,182.78/8,569.38
6. Step 6: Final answer
   x = 8,619.55