Finding the Fourth Proportional to 22,305.22, 30,778.96 and 12,876.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,305.22 : 30,778.96 = 12,876.82 : x
2. Step 2: Convert to fraction form
   22,305.22/30,778.96 = 12,876.82/x
3. Step 3: Cross multiply
   22,305.22x = 30,778.96 × 12,876.82
4. Step 4: Simplify right side
   22,305.22x = 396,335,127.71
5. Step 5: Solve for x
   x = 396,335,127.71/22,305.22
6. Step 6: Final answer
   x = 17,768.72