Finding the Fourth Proportional to 8,729.37, 12,052.55 and 8,171.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,729.37 : 12,052.55 = 8,171.69 : x
2. Step 2: Convert to fraction form
   8,729.37/12,052.55 = 8,171.69/x
3. Step 3: Cross multiply
   8,729.37x = 12,052.55 × 8,171.69
4. Step 4: Simplify right side
   8,729.37x = 98,489,616.51
5. Step 5: Solve for x
   x = 98,489,616.51/8,729.37
6. Step 6: Final answer
   x = 11,282.56