Finding the Fourth Proportional to 8,570.43, 12,862.94 and 6,111.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,570.43 : 12,862.94 = 6,111.27 : x
2. Step 2: Convert to fraction form
   8,570.43/12,862.94 = 6,111.27/x
3. Step 3: Cross multiply
   8,570.43x = 12,862.94 × 6,111.27
4. Step 4: Simplify right side
   8,570.43x = 78,608,868.78
5. Step 5: Solve for x
   x = 78,608,868.78/8,570.43
6. Step 6: Final answer
   x = 9,172.10