Finding the Fourth Proportional to 8,496.81, 12,748.59 and 3,815.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,496.81 : 12,748.59 = 3,815.55 : x
2. Step 2: Convert to fraction form
   8,496.81/12,748.59 = 3,815.55/x
3. Step 3: Cross multiply
   8,496.81x = 12,748.59 × 3,815.55
4. Step 4: Simplify right side
   8,496.81x = 48,642,882.57
5. Step 5: Solve for x
   x = 48,642,882.57/8,496.81
6. Step 6: Final answer
   x = 5,724.84