Finding the Fourth Proportional to 22,816.42, 31,485.72 and 12,744.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,816.42 : 31,485.72 = 12,744.82 : x
2. Step 2: Convert to fraction form
   22,816.42/31,485.72 = 12,744.82/x
3. Step 3: Cross multiply
   22,816.42x = 31,485.72 × 12,744.82
4. Step 4: Simplify right side
   22,816.42x = 401,279,833.97
5. Step 5: Solve for x
   x = 401,279,833.97/22,816.42
6. Step 6: Final answer
   x = 17,587.33