Finding the Fourth Proportional to 17,170.56, 25,758.24 and 5,479.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,170.56 : 25,758.24 = 5,479.80 : x
2. Step 2: Convert to fraction form
   17,170.56/25,758.24 = 5,479.80/x
3. Step 3: Cross multiply
   17,170.56x = 25,758.24 × 5,479.80
4. Step 4: Simplify right side
   17,170.56x = 141,150,003.55
5. Step 5: Solve for x
   x = 141,150,003.55/17,170.56
6. Step 6: Final answer
   x = 8,220.47