Finding the Fourth Proportional to 22,816.15, 31,485.95 and 12,744.73

Step by Step Solution

1. Step 1: Write the proportion equation
   22,816.15 : 31,485.95 = 12,744.73 : x
2. Step 2: Convert to fraction form
   22,816.15/31,485.95 = 12,744.73/x
3. Step 3: Cross multiply
   22,816.15x = 31,485.95 × 12,744.73
4. Step 4: Simplify right side
   22,816.15x = 401,279,710.39
5. Step 5: Solve for x
   x = 401,279,710.39/22,816.15
6. Step 6: Final answer
   x = 17,587.53