Finding the Fourth Proportional to 10,839.51, 14,958.72 and 6,123.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.51 : 14,958.72 = 6,123.87 : x
2. Step 2: Convert to fraction form
   10,839.51/14,958.72 = 6,123.87/x
3. Step 3: Cross multiply
   10,839.51x = 14,958.72 × 6,123.87
4. Step 4: Simplify right side
   10,839.51x = 91,605,256.65
5. Step 5: Solve for x
   x = 91,605,256.65/10,839.51
6. Step 6: Final answer
   x = 8,451.05