Finding the Fourth Proportional to 22,306.22, 30,780.34 and 12,877.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,306.22 : 30,780.34 = 12,877.82 : x
2. Step 2: Convert to fraction form
   22,306.22/30,780.34 = 12,877.82/x
3. Step 3: Cross multiply
   22,306.22x = 30,780.34 × 12,877.82
4. Step 4: Simplify right side
   22,306.22x = 396,383,678.06
5. Step 5: Solve for x
   x = 396,383,678.06/22,306.22
6. Step 6: Final answer
   x = 17,770.10