Finding the Fourth Proportional to 8,456.79, 12,681.18 and 2,531.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,456.79 : 12,681.18 = 2,531.39 : x
2. Step 2: Convert to fraction form
   8,456.79/12,681.18 = 2,531.39/x
3. Step 3: Cross multiply
   8,456.79x = 12,681.18 × 2,531.39
4. Step 4: Simplify right side
   8,456.79x = 32,100,996.39
5. Step 5: Solve for x
   x = 32,100,996.39/8,456.79
6. Step 6: Final answer
   x = 3,795.89