Finding the Fourth Proportional to 22,456.59, 30,990.84 and 12,248.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.59 : 30,990.84 = 12,248.18 : x
2. Step 2: Convert to fraction form
   22,456.59/30,990.84 = 12,248.18/x
3. Step 3: Cross multiply
   22,456.59x = 30,990.84 × 12,248.18
4. Step 4: Simplify right side
   22,456.59x = 379,581,231.72
5. Step 5: Solve for x
   x = 379,581,231.72/22,456.59
6. Step 6: Final answer
   x = 16,902.89