Finding the Fourth Proportional to 22,815.42, 31,484.34 and 12,743.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,815.42 : 31,484.34 = 12,743.82 : x
2. Step 2: Convert to fraction form
   22,815.42/31,484.34 = 12,743.82/x
3. Step 3: Cross multiply
   22,815.42x = 31,484.34 × 12,743.82
4. Step 4: Simplify right side
   22,815.42x = 401,230,761.78
5. Step 5: Solve for x
   x = 401,230,761.78/22,815.42
6. Step 6: Final answer
   x = 17,585.95