Finding the Fourth Proportional to 22,311.74, 30,790.61 and 12,240.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,311.74 : 30,790.61 = 12,240.69 : x
2. Step 2: Convert to fraction form
   22,311.74/30,790.61 = 12,240.69/x
3. Step 3: Cross multiply
   22,311.74x = 30,790.61 × 12,240.69
4. Step 4: Simplify right side
   22,311.74x = 376,898,250.72
5. Step 5: Solve for x
   x = 376,898,250.72/22,311.74
6. Step 6: Final answer
   x = 16,892.38