Finding the Fourth Proportional to 8,986.59, 12,401.22 and 5,209.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,986.59 : 12,401.22 = 5,209.83 : x
2. Step 2: Convert to fraction form
   8,986.59/12,401.22 = 5,209.83/x
3. Step 3: Cross multiply
   8,986.59x = 12,401.22 × 5,209.83
4. Step 4: Simplify right side
   8,986.59x = 64,608,247.99
5. Step 5: Solve for x
   x = 64,608,247.99/8,986.59
6. Step 6: Final answer
   x = 7,189.41