Finding the Fourth Proportional to 22,685.67, 31,307.40 and 12,614.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,685.67 : 31,307.40 = 12,614.31 : x
2. Step 2: Convert to fraction form
   22,685.67/31,307.40 = 12,614.31/x
3. Step 3: Cross multiply
   22,685.67x = 31,307.40 × 12,614.31
4. Step 4: Simplify right side
   22,685.67x = 394,921,248.89
5. Step 5: Solve for x
   x = 394,921,248.89/22,685.67
6. Step 6: Final answer
   x = 17,408.40