Finding the Fourth Proportional to 22,309.52, 30,786.86 and 12,877.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,309.52 : 30,786.86 = 12,877.88 : x
2. Step 2: Convert to fraction form
   22,309.52/30,786.86 = 12,877.88/x
3. Step 3: Cross multiply
   22,309.52x = 30,786.86 × 12,877.88
4. Step 4: Simplify right side
   22,309.52x = 396,469,488.66
5. Step 5: Solve for x
   x = 396,469,488.66/22,309.52
6. Step 6: Final answer
   x = 17,771.31