Finding the Fourth Proportional to 22,422.25, 30,942.71 and 12,996.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,422.25 : 30,942.71 = 12,996.28 : x
2. Step 2: Convert to fraction form
   22,422.25/30,942.71 = 12,996.28/x
3. Step 3: Cross multiply
   22,422.25x = 30,942.71 × 12,996.28
4. Step 4: Simplify right side
   22,422.25x = 402,140,123.12
5. Step 5: Solve for x
   x = 402,140,123.12/22,422.25
6. Step 6: Final answer
   x = 17,934.87