Finding the Fourth Proportional to 17,209.72, 25,808.82 and 5,520.16

Step by Step Solution

1. Step 1: Write the proportion equation
   17,209.72 : 25,808.82 = 5,520.16 : x
2. Step 2: Convert to fraction form
   17,209.72/25,808.82 = 5,520.16/x
3. Step 3: Cross multiply
   17,209.72x = 25,808.82 × 5,520.16
4. Step 4: Simplify right side
   17,209.72x = 142,468,815.81
5. Step 5: Solve for x
   x = 142,468,815.81/17,209.72
6. Step 6: Final answer
   x = 8,278.39