Finding the Fourth Proportional to 12,394.92, 17,105.38 and 7,091.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,394.92 : 17,105.38 = 7,091.45 : x
2. Step 2: Convert to fraction form
   12,394.92/17,105.38 = 7,091.45/x
3. Step 3: Cross multiply
   12,394.92x = 17,105.38 × 7,091.45
4. Step 4: Simplify right side
   12,394.92x = 121,301,907.89
5. Step 5: Solve for x
   x = 121,301,907.89/12,394.92
6. Step 6: Final answer
   x = 9,786.42