Finding the Fourth Proportional to 12,485.56, 17,230.98 and 7,182.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485.56 : 17,230.98 = 7,182.04 : x
2. Step 2: Convert to fraction form
   12,485.56/17,230.98 = 7,182.04/x
3. Step 3: Cross multiply
   12,485.56x = 17,230.98 × 7,182.04
4. Step 4: Simplify right side
   12,485.56x = 123,753,587.60
5. Step 5: Solve for x
   x = 123,753,587.60/12,485.56
6. Step 6: Final answer
   x = 9,911.74