Finding the Fourth Proportional to 7,234.88, 10,868.96 and 5,131.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,234.88 : 10,868.96 = 5,131.71 : x
2. Step 2: Convert to fraction form
   7,234.88/10,868.96 = 5,131.71/x
3. Step 3: Cross multiply
   7,234.88x = 10,868.96 × 5,131.71
4. Step 4: Simplify right side
   7,234.88x = 55,776,342.91
5. Step 5: Solve for x
   x = 55,776,342.91/7,234.88
6. Step 6: Final answer
   x = 7,709.37