Finding the Fourth Proportional to 22,456.83, 30,990.60 and 12,385.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.83 : 30,990.60 = 12,385.62 : x
2. Step 2: Convert to fraction form
   22,456.83/30,990.60 = 12,385.62/x
3. Step 3: Cross multiply
   22,456.83x = 30,990.60 × 12,385.62
4. Step 4: Simplify right side
   22,456.83x = 383,837,795.17
5. Step 5: Solve for x
   x = 383,837,795.17/22,456.83
6. Step 6: Final answer
   x = 17,092.25