Finding the Fourth Proportional to 8,146.40, 12,215.14 and 3,759.95

Step by Step Solution

1. Step 1: Write the proportion equation
   8,146.40 : 12,215.14 = 3,759.95 : x
2. Step 2: Convert to fraction form
   8,146.40/12,215.14 = 3,759.95/x
3. Step 3: Cross multiply
   8,146.40x = 12,215.14 × 3,759.95
4. Step 4: Simplify right side
   8,146.40x = 45,928,336.78
5. Step 5: Solve for x
   x = 45,928,336.78/8,146.40
6. Step 6: Final answer
   x = 5,637.87