Finding the Fourth Proportional to 8,986.83, 13,482.87 and 3,143.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,986.83 : 13,482.87 = 3,143.89 : x
2. Step 2: Convert to fraction form
   8,986.83/13,482.87 = 3,143.89/x
3. Step 3: Cross multiply
   8,986.83x = 13,482.87 × 3,143.89
4. Step 4: Simplify right side
   8,986.83x = 42,388,660.16
5. Step 5: Solve for x
   x = 42,388,660.16/8,986.83
6. Step 6: Final answer
   x = 4,716.75