Finding the Fourth Proportional to 22,819.39, 31,489.67 and 12,745.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,819.39 : 31,489.67 = 12,745.82 : x
2. Step 2: Convert to fraction form
   22,819.39/31,489.67 = 12,745.82/x
3. Step 3: Cross multiply
   22,819.39x = 31,489.67 × 12,745.82
4. Step 4: Simplify right side
   22,819.39x = 401,361,776.27
5. Step 5: Solve for x
   x = 401,361,776.27/22,819.39
6. Step 6: Final answer
   x = 17,588.63