Finding the Fourth Proportional to 40,021.64, 55,229.50 and 22,116.49

Step by Step Solution

1. Step 1: Write the proportion equation
   40,021.64 : 55,229.50 = 22,116.49 : x
2. Step 2: Convert to fraction form
   40,021.64/55,229.50 = 22,116.49/x
3. Step 3: Cross multiply
   40,021.64x = 55,229.50 × 22,116.49
4. Step 4: Simplify right side
   40,021.64x = 1,221,482,760.29
5. Step 5: Solve for x
   x = 1,221,482,760.29/40,021.64
6. Step 6: Final answer
   x = 30,520.55