Finding the Fourth Proportional to 22,359.74, 30,855.81 and 12,288.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.74 : 30,855.81 = 12,288.18 : x
2. Step 2: Convert to fraction form
   22,359.74/30,855.81 = 12,288.18/x
3. Step 3: Cross multiply
   22,359.74x = 30,855.81 × 12,288.18
4. Step 4: Simplify right side
   22,359.74x = 379,161,747.33
5. Step 5: Solve for x
   x = 379,161,747.33/22,359.74
6. Step 6: Final answer
   x = 16,957.35