Finding the Fourth Proportional to 22,078.91, 30,469.68 and 12,649.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,078.91 : 30,469.68 = 12,649.30 : x
2. Step 2: Convert to fraction form
   22,078.91/30,469.68 = 12,649.30/x
3. Step 3: Cross multiply
   22,078.91x = 30,469.68 × 12,649.30
4. Step 4: Simplify right side
   22,078.91x = 385,420,047.05
5. Step 5: Solve for x
   x = 385,420,047.05/22,078.91
6. Step 6: Final answer
   x = 17,456.48