Finding the Fourth Proportional to 8,726.31, 12,042.50 and 5,000.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,726.31 : 12,042.50 = 5,000.31 : x
2. Step 2: Convert to fraction form
   8,726.31/12,042.50 = 5,000.31/x
3. Step 3: Cross multiply
   8,726.31x = 12,042.50 × 5,000.31
4. Step 4: Simplify right side
   8,726.31x = 60,216,208.17
5. Step 5: Solve for x
   x = 60,216,208.17/8,726.31
6. Step 6: Final answer
   x = 6,900.54