Finding the Fourth Proportional to 9,377.98, 12,930.94 and 8,806.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,377.98 : 12,930.94 = 8,806.02 : x
2. Step 2: Convert to fraction form
   9,377.98/12,930.94 = 8,806.02/x
3. Step 3: Cross multiply
   9,377.98x = 12,930.94 × 8,806.02
4. Step 4: Simplify right side
   9,377.98x = 113,870,078.78
5. Step 5: Solve for x
   x = 113,870,078.78/9,377.98
6. Step 6: Final answer
   x = 12,142.29