Finding the Fourth Proportional to 9,231.59, 12,739.57 and 5,039.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,231.59 : 12,739.57 = 5,039.84 : x
2. Step 2: Convert to fraction form
   9,231.59/12,739.57 = 5,039.84/x
3. Step 3: Cross multiply
   9,231.59x = 12,739.57 × 5,039.84
4. Step 4: Simplify right side
   9,231.59x = 64,205,394.47
5. Step 5: Solve for x
   x = 64,205,394.47/9,231.59
6. Step 6: Final answer
   x = 6,954.97