Finding the Fourth Proportional to 17,105, 25,638.82 and 10,867.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105 : 25,638.82 = 10,867.80 : x
2. Step 2: Convert to fraction form
   17,105/25,638.82 = 10,867.80/x
3. Step 3: Cross multiply
   17,105x = 25,638.82 × 10,867.80
4. Step 4: Simplify right side
   17,105x = 278,637,568.00
5. Step 5: Solve for x
   x = 278,637,568.00/17,105
6. Step 6: Final answer
   x = 16,289.83