Finding the Fourth Proportional to 22,189.98, 33,285 and 12,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,189.98 : 33,285 = 12,949.50 : x
2. Step 2: Convert to fraction form
   22,189.98/33,285 = 12,949.50/x
3. Step 3: Cross multiply
   22,189.98x = 33,285 × 12,949.50
4. Step 4: Simplify right side
   22,189.98x = 431,024,107.50
5. Step 5: Solve for x
   x = 431,024,107.50/22,189.98
6. Step 6: Final answer
   x = 19,424.27