Finding the Fourth Proportional to 22,456.82, 30,989.67 and 12,385.44

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.82 : 30,989.67 = 12,385.44 : x
2. Step 2: Convert to fraction form
   22,456.82/30,989.67 = 12,385.44/x
3. Step 3: Cross multiply
   22,456.82x = 30,989.67 × 12,385.44
4. Step 4: Simplify right side
   22,456.82x = 383,820,698.40
5. Step 5: Solve for x
   x = 383,820,698.40/22,456.82
6. Step 6: Final answer
   x = 17,091.50