Finding the Fourth Proportional to 20,454.93, 30,499.61 and 20,414.97

Step by Step Solution

1. Step 1: Write the proportion equation
   20,454.93 : 30,499.61 = 20,414.97 : x
2. Step 2: Convert to fraction form
   20,454.93/30,499.61 = 20,414.97/x
3. Step 3: Cross multiply
   20,454.93x = 30,499.61 × 20,414.97
4. Step 4: Simplify right side
   20,454.93x = 622,648,521.09
5. Step 5: Solve for x
   x = 622,648,521.09/20,454.93
6. Step 6: Final answer
   x = 30,440.02