Finding the Fourth Proportional to 22,618.41, 31,210.89 and 12,544.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,618.41 : 31,210.89 = 12,544.33 : x
2. Step 2: Convert to fraction form
   22,618.41/31,210.89 = 12,544.33/x
3. Step 3: Cross multiply
   22,618.41x = 31,210.89 × 12,544.33
4. Step 4: Simplify right side
   22,618.41x = 391,519,789.81
5. Step 5: Solve for x
   x = 391,519,789.81/22,618.41
6. Step 6: Final answer
   x = 17,309.78