Finding the Fourth Proportional to 22,359.97, 30,854.75 and 12,288.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.97 : 30,854.75 = 12,288.30 : x
2. Step 2: Convert to fraction form
   22,359.97/30,854.75 = 12,288.30/x
3. Step 3: Cross multiply
   22,359.97x = 30,854.75 × 12,288.30
4. Step 4: Simplify right side
   22,359.97x = 379,152,424.43
5. Step 5: Solve for x
   x = 379,152,424.43/22,359.97
6. Step 6: Final answer
   x = 16,956.75