Finding the Fourth Proportional to 8,570.48, 12,855.69 and 2,727.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,570.48 : 12,855.69 = 2,727.07 : x
2. Step 2: Convert to fraction form
   8,570.48/12,855.69 = 2,727.07/x
3. Step 3: Cross multiply
   8,570.48x = 12,855.69 × 2,727.07
4. Step 4: Simplify right side
   8,570.48x = 35,058,334.39
5. Step 5: Solve for x
   x = 35,058,334.39/8,570.48
6. Step 6: Final answer
   x = 4,090.59