Finding the Fourth Proportional to 40,216.60, 55,498.42 and 22,311.16

Step by Step Solution

1. Step 1: Write the proportion equation
   40,216.60 : 55,498.42 = 22,311.16 : x
2. Step 2: Convert to fraction form
   40,216.60/55,498.42 = 22,311.16/x
3. Step 3: Cross multiply
   40,216.60x = 55,498.42 × 22,311.16
4. Step 4: Simplify right side
   40,216.60x = 1,238,234,128.37
5. Step 5: Solve for x
   x = 1,238,234,128.37/40,216.60
6. Step 6: Final answer
   x = 30,789.13