Finding the Fourth Proportional to 22,513, 31,067.94 and 12,578.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,513 : 31,067.94 = 12,578.92 : x
2. Step 2: Convert to fraction form
   22,513/31,067.94 = 12,578.92/x
3. Step 3: Cross multiply
   22,513x = 31,067.94 × 12,578.92
4. Step 4: Simplify right side
   22,513x = 390,801,131.82
5. Step 5: Solve for x
   x = 390,801,131.82/22,513
6. Step 6: Final answer
   x = 17,358.91