Finding the Fourth Proportional to 22,146.38, 30,563.82 and 12,716.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,146.38 : 30,563.82 = 12,716.78 : x
2. Step 2: Convert to fraction form
   22,146.38/30,563.82 = 12,716.78/x
3. Step 3: Cross multiply
   22,146.38x = 30,563.82 × 12,716.78
4. Step 4: Simplify right side
   22,146.38x = 388,673,374.90
5. Step 5: Solve for x
   x = 388,673,374.90/22,146.38
6. Step 6: Final answer
   x = 17,550.20