Finding the Fourth Proportional to 12,682.72, 17,501.12 and 7,017.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,682.72 : 17,501.12 = 7,017.48 : x
2. Step 2: Convert to fraction form
   12,682.72/17,501.12 = 7,017.48/x
3. Step 3: Cross multiply
   12,682.72x = 17,501.12 × 7,017.48
4. Step 4: Simplify right side
   12,682.72x = 122,813,759.58
5. Step 5: Solve for x
   x = 122,813,759.58/12,682.72
6. Step 6: Final answer
   x = 9,683.55