Finding the Fourth Proportional to 22,649.05, 31,255.97 and 12,578.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,649.05 : 31,255.97 = 12,578.12 : x
2. Step 2: Convert to fraction form
   22,649.05/31,255.97 = 12,578.12/x
3. Step 3: Cross multiply
   22,649.05x = 31,255.97 × 12,578.12
4. Step 4: Simplify right side
   22,649.05x = 393,141,341.38
5. Step 5: Solve for x
   x = 393,141,341.38/22,649.05
6. Step 6: Final answer
   x = 17,357.96