Finding the Fourth Proportional to 8,456.75, 12,685.27 and 4,971.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,456.75 : 12,685.27 = 4,971.22 : x
2. Step 2: Convert to fraction form
   8,456.75/12,685.27 = 4,971.22/x
3. Step 3: Cross multiply
   8,456.75x = 12,685.27 × 4,971.22
4. Step 4: Simplify right side
   8,456.75x = 63,061,223.79
5. Step 5: Solve for x
   x = 63,061,223.79/8,456.75
6. Step 6: Final answer
   x = 7,456.91