Finding the Fourth Proportional to 22,338.38, 30,825.77 and 12,778.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,338.38 : 30,825.77 = 12,778.46 : x
2. Step 2: Convert to fraction form
   22,338.38/30,825.77 = 12,778.46/x
3. Step 3: Cross multiply
   22,338.38x = 30,825.77 × 12,778.46
4. Step 4: Simplify right side
   22,338.38x = 393,905,766.49
5. Step 5: Solve for x
   x = 393,905,766.49/22,338.38
6. Step 6: Final answer
   x = 17,633.58