Finding the Fourth Proportional to 9,231.57, 12,739.59 and 5,039.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,231.57 : 12,739.59 = 5,039.82 : x
2. Step 2: Convert to fraction form
   9,231.57/12,739.59 = 5,039.82/x
3. Step 3: Cross multiply
   9,231.57x = 12,739.59 × 5,039.82
4. Step 4: Simplify right side
   9,231.57x = 64,205,240.47
5. Step 5: Solve for x
   x = 64,205,240.47/9,231.57
6. Step 6: Final answer
   x = 6,954.96