Finding the Fourth Proportional to 22,497.42, 31,046.31 and 13,065.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,497.42 : 31,046.31 = 13,065.78 : x
2. Step 2: Convert to fraction form
   22,497.42/31,046.31 = 13,065.78/x
3. Step 3: Cross multiply
   22,497.42x = 31,046.31 × 13,065.78
4. Step 4: Simplify right side
   22,497.42x = 405,644,256.27
5. Step 5: Solve for x
   x = 405,644,256.27/22,497.42
6. Step 6: Final answer
   x = 18,030.70