Finding the Fourth Proportional to 5,123.29, 7,686.76 and 2,162.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.29 : 7,686.76 = 2,162.47 : x
2. Step 2: Convert to fraction form
   5,123.29/7,686.76 = 2,162.47/x
3. Step 3: Cross multiply
   5,123.29x = 7,686.76 × 2,162.47
4. Step 4: Simplify right side
   5,123.29x = 16,622,349.46
5. Step 5: Solve for x
   x = 16,622,349.46/5,123.29
6. Step 6: Final answer
   x = 3,244.47