Finding the Fourth Proportional to 9,114.80, 12,496.38 and 8,948.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,114.80 : 12,496.38 = 8,948.72 : x
2. Step 2: Convert to fraction form
   9,114.80/12,496.38 = 8,948.72/x
3. Step 3: Cross multiply
   9,114.80x = 12,496.38 × 8,948.72
4. Step 4: Simplify right side
   9,114.80x = 111,826,605.63
5. Step 5: Solve for x
   x = 111,826,605.63/9,114.80
6. Step 6: Final answer
   x = 12,268.68