Finding the Fourth Proportional to 22,443.91, 30,969.20 and 12,752.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.91 : 30,969.20 = 12,752.78 : x
2. Step 2: Convert to fraction form
   22,443.91/30,969.20 = 12,752.78/x
3. Step 3: Cross multiply
   22,443.91x = 30,969.20 × 12,752.78
4. Step 4: Simplify right side
   22,443.91x = 394,943,271.41
5. Step 5: Solve for x
   x = 394,943,271.41/22,443.91
6. Step 6: Final answer
   x = 17,596.90