Finding the Fourth Proportional to 17,166.72, 25,755 and 8,404.20

Step by Step Solution

1. Step 1: Write the proportion equation
   17,166.72 : 25,755 = 8,404.20 : x
2. Step 2: Convert to fraction form
   17,166.72/25,755 = 8,404.20/x
3. Step 3: Cross multiply
   17,166.72x = 25,755 × 8,404.20
4. Step 4: Simplify right side
   17,166.72x = 216,450,171.00
5. Step 5: Solve for x
   x = 216,450,171.00/17,166.72
6. Step 6: Final answer
   x = 12,608.71