Finding the Fourth Proportional to 22,311.38, 30,789.82 and 12,240.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,311.38 : 30,789.82 = 12,240.75 : x
2. Step 2: Convert to fraction form
   22,311.38/30,789.82 = 12,240.75/x
3. Step 3: Cross multiply
   22,311.38x = 30,789.82 × 12,240.75
4. Step 4: Simplify right side
   22,311.38x = 376,890,619.93
5. Step 5: Solve for x
   x = 376,890,619.93/22,311.38
6. Step 6: Final answer
   x = 16,892.30