Finding the Fourth Proportional to 12,399, 17,112.78 and 7,094.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399 : 17,112.78 = 7,094.04 : x
2. Step 2: Convert to fraction form
   12,399/17,112.78 = 7,094.04/x
3. Step 3: Cross multiply
   12,399x = 17,112.78 × 7,094.04
4. Step 4: Simplify right side
   12,399x = 121,398,745.83
5. Step 5: Solve for x
   x = 121,398,745.83/12,399
6. Step 6: Final answer
   x = 9,791.01