Finding the Fourth Proportional to 22,815.35, 31,484.53 and 12,743.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,815.35 : 31,484.53 = 12,743.49 : x
2. Step 2: Convert to fraction form
   22,815.35/31,484.53 = 12,743.49/x
3. Step 3: Cross multiply
   22,815.35x = 31,484.53 × 12,743.49
4. Step 4: Simplify right side
   22,815.35x = 401,222,729.49
5. Step 5: Solve for x
   x = 401,222,729.49/22,815.35
6. Step 6: Final answer
   x = 17,585.65