Finding the Fourth Proportional to 9,939.38, 14,903.31 and 4,089.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.38 : 14,903.31 = 4,089.38 : x
2. Step 2: Convert to fraction form
   9,939.38/14,903.31 = 4,089.38/x
3. Step 3: Cross multiply
   9,939.38x = 14,903.31 × 4,089.38
4. Step 4: Simplify right side
   9,939.38x = 60,945,297.85
5. Step 5: Solve for x
   x = 60,945,297.85/9,939.38
6. Step 6: Final answer
   x = 6,131.70