Finding the Fourth Proportional to 9,398.88, 12,942.72 and 9,194.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,398.88 : 12,942.72 = 9,194.40 : x
2. Step 2: Convert to fraction form
   9,398.88/12,942.72 = 9,194.40/x
3. Step 3: Cross multiply
   9,398.88x = 12,942.72 × 9,194.40
4. Step 4: Simplify right side
   9,398.88x = 119,000,544.77
5. Step 5: Solve for x
   x = 119,000,544.77/9,398.88
6. Step 6: Final answer
   x = 12,661.14