Finding the Fourth Proportional to 22,581.78, 31,164.77 and 12,513.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.78 : 31,164.77 = 12,513.38 : x
2. Step 2: Convert to fraction form
   22,581.78/31,164.77 = 12,513.38/x
3. Step 3: Cross multiply
   22,581.78x = 31,164.77 × 12,513.38
4. Step 4: Simplify right side
   22,581.78x = 389,976,391.23
5. Step 5: Solve for x
   x = 389,976,391.23/22,581.78
6. Step 6: Final answer
   x = 17,269.52