Finding the Fourth Proportional to 8,136.72, 12,200.52 and 2,589.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,136.72 : 12,200.52 = 2,589.06 : x
2. Step 2: Convert to fraction form
   8,136.72/12,200.52 = 2,589.06/x
3. Step 3: Cross multiply
   8,136.72x = 12,200.52 × 2,589.06
4. Step 4: Simplify right side
   8,136.72x = 31,587,878.31
5. Step 5: Solve for x
   x = 31,587,878.31/8,136.72
6. Step 6: Final answer
   x = 3,882.14