Finding the Fourth Proportional to 16,870.28, 25,313.31 and 8,105.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,870.28 : 25,313.31 = 8,105.27 : x
2. Step 2: Convert to fraction form
   16,870.28/25,313.31 = 8,105.27/x
3. Step 3: Cross multiply
   16,870.28x = 25,313.31 × 8,105.27
4. Step 4: Simplify right side
   16,870.28x = 205,171,085.58
5. Step 5: Solve for x
   x = 205,171,085.58/16,870.28
6. Step 6: Final answer
   x = 12,161.69