Finding the Fourth Proportional to 8,723.31, 13,086.59 and 4,040.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,723.31 : 13,086.59 = 4,040.23 : x
2. Step 2: Convert to fraction form
   8,723.31/13,086.59 = 4,040.23/x
3. Step 3: Cross multiply
   8,723.31x = 13,086.59 × 4,040.23
4. Step 4: Simplify right side
   8,723.31x = 52,872,833.52
5. Step 5: Solve for x
   x = 52,872,833.52/8,723.31
6. Step 6: Final answer
   x = 6,061.10