Finding the Fourth Proportional to 10,234.20, 14,123.70 and 5,757.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,234.20 : 14,123.70 = 5,757.72 : x
2. Step 2: Convert to fraction form
   10,234.20/14,123.70 = 5,757.72/x
3. Step 3: Cross multiply
   10,234.20x = 14,123.70 × 5,757.72
4. Step 4: Simplify right side
   10,234.20x = 81,320,309.96
5. Step 5: Solve for x
   x = 81,320,309.96/10,234.20
6. Step 6: Final answer
   x = 7,945.94