Finding the Fourth Proportional to 10,839.43, 14,958.71 and 6,123.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.43 : 14,958.71 = 6,123.61 : x
2. Step 2: Convert to fraction form
   10,839.43/14,958.71 = 6,123.61/x
3. Step 3: Cross multiply
   10,839.43x = 14,958.71 × 6,123.61
4. Step 4: Simplify right side
   10,839.43x = 91,601,306.14
5. Step 5: Solve for x
   x = 91,601,306.14/10,839.43
6. Step 6: Final answer
   x = 8,450.75