Finding the Fourth Proportional to 21,771.56, 30,047.24 and 14,712.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,771.56 : 30,047.24 = 14,712.42 : x
2. Step 2: Convert to fraction form
   21,771.56/30,047.24 = 14,712.42/x
3. Step 3: Cross multiply
   21,771.56x = 30,047.24 × 14,712.42
4. Step 4: Simplify right side
   21,771.56x = 442,067,614.72
5. Step 5: Solve for x
   x = 442,067,614.72/21,771.56
6. Step 6: Final answer
   x = 20,304.82