Finding the Fourth Proportional to 17,020.72, 25,515.50 and 7,160.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,020.72 : 25,515.50 = 7,160.70 : x
2. Step 2: Convert to fraction form
   17,020.72/25,515.50 = 7,160.70/x
3. Step 3: Cross multiply
   17,020.72x = 25,515.50 × 7,160.70
4. Step 4: Simplify right side
   17,020.72x = 182,708,840.85
5. Step 5: Solve for x
   x = 182,708,840.85/17,020.72
6. Step 6: Final answer
   x = 10,734.50