Finding the Fourth Proportional to 8,525.45, 12,786.15 and 3,258.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,525.45 : 12,786.15 = 3,258.53 : x
2. Step 2: Convert to fraction form
   8,525.45/12,786.15 = 3,258.53/x
3. Step 3: Cross multiply
   8,525.45x = 12,786.15 × 3,258.53
4. Step 4: Simplify right side
   8,525.45x = 41,664,049.60
5. Step 5: Solve for x
   x = 41,664,049.60/8,525.45
6. Step 6: Final answer
   x = 4,887.02