Finding the Fourth Proportional to 12,485.58, 17,223.60 and 8,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485.58 : 17,223.60 = 8,452.50 : x
2. Step 2: Convert to fraction form
   12,485.58/17,223.60 = 8,452.50/x
3. Step 3: Cross multiply
   12,485.58x = 17,223.60 × 8,452.50
4. Step 4: Simplify right side
   12,485.58x = 145,582,479
5. Step 5: Solve for x
   x = 145,582,479/12,485.58
6. Step 6: Final answer
   x = 11,660.05