Finding the Fourth Proportional to 3,789.26, 5,227.98 and 2,216.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.26 : 5,227.98 = 2,216.78 : x
2. Step 2: Convert to fraction form
   3,789.26/5,227.98 = 2,216.78/x
3. Step 3: Cross multiply
   3,789.26x = 5,227.98 × 2,216.78
4. Step 4: Simplify right side
   3,789.26x = 11,589,281.50
5. Step 5: Solve for x
   x = 11,589,281.50/3,789.26
6. Step 6: Final answer
   x = 3,058.46