Finding the Fourth Proportional to 3,866.71, 5,793.88 and 3,764.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,866.71 : 5,793.88 = 3,764.20 : x
2. Step 2: Convert to fraction form
   3,866.71/5,793.88 = 3,764.20/x
3. Step 3: Cross multiply
   3,866.71x = 5,793.88 × 3,764.20
4. Step 4: Simplify right side
   3,866.71x = 21,809,323.10
5. Step 5: Solve for x
   x = 21,809,323.10/3,866.71
6. Step 6: Final answer
   x = 5,640.28