Finding the Fourth Proportional to 21,818.96, 30,127.92 and 17,786.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,818.96 : 30,127.92 = 17,786.42 : x
2. Step 2: Convert to fraction form
   21,818.96/30,127.92 = 17,786.42/x
3. Step 3: Cross multiply
   21,818.96x = 30,127.92 × 17,786.42
4. Step 4: Simplify right side
   21,818.96x = 535,867,838.85
5. Step 5: Solve for x
   x = 535,867,838.85/21,818.96
6. Step 6: Final answer
   x = 24,559.73