Finding the Fourth Proportional to 8,571.78, 12,848.31 and 3,371.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,571.78 : 12,848.31 = 3,371.94 : x
2. Step 2: Convert to fraction form
   8,571.78/12,848.31 = 3,371.94/x
3. Step 3: Cross multiply
   8,571.78x = 12,848.31 × 3,371.94
4. Step 4: Simplify right side
   8,571.78x = 43,323,730.42
5. Step 5: Solve for x
   x = 43,323,730.42/8,571.78
6. Step 6: Final answer
   x = 5,054.23