Finding the Fourth Proportional to 3,878.06, 5,352.93 and 2,388.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.06 : 5,352.93 = 2,388.15 : x
2. Step 2: Convert to fraction form
   3,878.06/5,352.93 = 2,388.15/x
3. Step 3: Cross multiply
   3,878.06x = 5,352.93 × 2,388.15
4. Step 4: Simplify right side
   3,878.06x = 12,783,599.78
5. Step 5: Solve for x
   x = 12,783,599.78/3,878.06
6. Step 6: Final answer
   x = 3,296.39