Finding the Fourth Proportional to 12,855.76, 19,281.04 and 3,496.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,855.76 : 19,281.04 = 3,496.42 : x
2. Step 2: Convert to fraction form
   12,855.76/19,281.04 = 3,496.42/x
3. Step 3: Cross multiply
   12,855.76x = 19,281.04 × 3,496.42
4. Step 4: Simplify right side
   12,855.76x = 67,414,520.78
5. Step 5: Solve for x
   x = 67,414,520.78/12,855.76
6. Step 6: Final answer
   x = 5,243.91