Finding the Fourth Proportional to 9,839.88, 14,754.24 and 3,989.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,839.88 : 14,754.24 = 3,989.61 : x
2. Step 2: Convert to fraction form
   9,839.88/14,754.24 = 3,989.61/x
3. Step 3: Cross multiply
   9,839.88x = 14,754.24 × 3,989.61
4. Step 4: Simplify right side
   9,839.88x = 58,863,663.45
5. Step 5: Solve for x
   x = 58,863,663.45/9,839.88
6. Step 6: Final answer
   x = 5,982.15