Finding the Fourth Proportional to 10,839.42, 14,958.63 and 6,123.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.42 : 14,958.63 = 6,123.69 : x
2. Step 2: Convert to fraction form
   10,839.42/14,958.63 = 6,123.69/x
3. Step 3: Cross multiply
   10,839.42x = 14,958.63 × 6,123.69
4. Step 4: Simplify right side
   10,839.42x = 91,602,012.94
5. Step 5: Solve for x
   x = 91,602,012.94/10,839.42
6. Step 6: Final answer
   x = 8,450.82