Finding the Fourth Proportional to 10,958.71, 15,123.18 and 6,242.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,958.71 : 15,123.18 = 6,242.89 : x
2. Step 2: Convert to fraction form
   10,958.71/15,123.18 = 6,242.89/x
3. Step 3: Cross multiply
   10,958.71x = 15,123.18 × 6,242.89
4. Step 4: Simplify right side
   10,958.71x = 94,412,345.59
5. Step 5: Solve for x
   x = 94,412,345.59/10,958.71
6. Step 6: Final answer
   x = 8,615.28