Finding the Fourth Proportional to 12,863.57, 17,734.71 and 9,275.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,863.57 : 17,734.71 = 9,275.53 : x
2. Step 2: Convert to fraction form
   12,863.57/17,734.71 = 9,275.53/x
3. Step 3: Cross multiply
   12,863.57x = 17,734.71 × 9,275.53
4. Step 4: Simplify right side
   12,863.57x = 164,498,745.97
5. Step 5: Solve for x
   x = 164,498,745.97/12,863.57
6. Step 6: Final answer
   x = 12,787.95