Finding the Fourth Proportional to 22,116.20, 30,520.73 and 12,555.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,116.20 : 30,520.73 = 12,555.83 : x
2. Step 2: Convert to fraction form
   22,116.20/30,520.73 = 12,555.83/x
3. Step 3: Cross multiply
   22,116.20x = 30,520.73 × 12,555.83
4. Step 4: Simplify right side
   22,116.20x = 383,213,205.05
5. Step 5: Solve for x
   x = 383,213,205.05/22,116.20
6. Step 6: Final answer
   x = 17,327.27