Finding the Fourth Proportional to 4,168.72, 5,766.42 and 3,923.92

Step by Step Solution

1. Step 1: Write the proportion equation
   4,168.72 : 5,766.42 = 3,923.92 : x
2. Step 2: Convert to fraction form
   4,168.72/5,766.42 = 3,923.92/x
3. Step 3: Cross multiply
   4,168.72x = 5,766.42 × 3,923.92
4. Step 4: Simplify right side
   4,168.72x = 22,626,970.77
5. Step 5: Solve for x
   x = 22,626,970.77/4,168.72
6. Step 6: Final answer
   x = 5,427.80