Finding the Fourth Proportional to 17,210.06, 25,809.60 and 5,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,210.06 : 25,809.60 = 5,520.50 : x
2. Step 2: Convert to fraction form
   17,210.06/25,809.60 = 5,520.50/x
3. Step 3: Cross multiply
   17,210.06x = 25,809.60 × 5,520.50
4. Step 4: Simplify right side
   17,210.06x = 142,481,896.80
5. Step 5: Solve for x
   x = 142,481,896.80/17,210.06
6. Step 6: Final answer
   x = 8,278.99