Finding the Fourth Proportional to 8,258.78, 12,386.76 and 2,711.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,258.78 : 12,386.76 = 2,711.98 : x
2. Step 2: Convert to fraction form
   8,258.78/12,386.76 = 2,711.98/x
3. Step 3: Cross multiply
   8,258.78x = 12,386.76 × 2,711.98
4. Step 4: Simplify right side
   8,258.78x = 33,592,645.38
5. Step 5: Solve for x
   x = 33,592,645.38/8,258.78
6. Step 6: Final answer
   x = 4,067.51