Finding the Fourth Proportional to 3,815.91, 5,263.52 and 3,225.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,815.91 : 5,263.52 = 3,225.69 : x
2. Step 2: Convert to fraction form
   3,815.91/5,263.52 = 3,225.69/x
3. Step 3: Cross multiply
   3,815.91x = 5,263.52 × 3,225.69
4. Step 4: Simplify right side
   3,815.91x = 16,978,467.70
5. Step 5: Solve for x
   x = 16,978,467.70/3,815.91
6. Step 6: Final answer
   x = 4,449.39