Finding the Fourth Proportional to 22,076.92, 30,456.30 and 13,121.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,076.92 : 30,456.30 = 13,121.56 : x
2. Step 2: Convert to fraction form
   22,076.92/30,456.30 = 13,121.56/x
3. Step 3: Cross multiply
   22,076.92x = 30,456.30 × 13,121.56
4. Step 4: Simplify right side
   22,076.92x = 399,634,167.83
5. Step 5: Solve for x
   x = 399,634,167.83/22,076.92
6. Step 6: Final answer
   x = 18,101.90