Finding the Fourth Proportional to 3,870.16, 5,808.74 and 2,617.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.16 : 5,808.74 = 2,617.73 : x
2. Step 2: Convert to fraction form
   3,870.16/5,808.74 = 2,617.73/x
3. Step 3: Cross multiply
   3,870.16x = 5,808.74 × 2,617.73
4. Step 4: Simplify right side
   3,870.16x = 15,205,712.96
5. Step 5: Solve for x
   x = 15,205,712.96/3,870.16
6. Step 6: Final answer
   x = 3,928.96