Finding the Fourth Proportional to 10,987.16, 16,469.10 and 3,589.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.16 : 16,469.10 = 3,589.61 : x
2. Step 2: Convert to fraction form
   10,987.16/16,469.10 = 3,589.61/x
3. Step 3: Cross multiply
   10,987.16x = 16,469.10 × 3,589.61
4. Step 4: Simplify right side
   10,987.16x = 59,117,563.71
5. Step 5: Solve for x
   x = 59,117,563.71/10,987.16
6. Step 6: Final answer
   x = 5,380.61