Finding the Fourth Proportional to 22,456.82, 30,990.65 and 12,385.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.82 : 30,990.65 = 12,385.68 : x
2. Step 2: Convert to fraction form
   22,456.82/30,990.65 = 12,385.68/x
3. Step 3: Cross multiply
   22,456.82x = 30,990.65 × 12,385.68
4. Step 4: Simplify right side
   22,456.82x = 383,840,211.96
5. Step 5: Solve for x
   x = 383,840,211.96/22,456.82
6. Step 6: Final answer
   x = 17,092.37