Finding the Fourth Proportional to 8,362.82, 12,544.72 and 2,815.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,362.82 : 12,544.72 = 2,815.70 : x
2. Step 2: Convert to fraction form
   8,362.82/12,544.72 = 2,815.70/x
3. Step 3: Cross multiply
   8,362.82x = 12,544.72 × 2,815.70
4. Step 4: Simplify right side
   8,362.82x = 35,322,168.10
5. Step 5: Solve for x
   x = 35,322,168.10/8,362.82
6. Step 6: Final answer
   x = 4,223.71