Finding the Fourth Proportional to 12,799.38, 17,662.88 and 7,134.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,799.38 : 17,662.88 = 7,134.12 : x
2. Step 2: Convert to fraction form
   12,799.38/17,662.88 = 7,134.12/x
3. Step 3: Cross multiply
   12,799.38x = 17,662.88 × 7,134.12
4. Step 4: Simplify right side
   12,799.38x = 126,009,105.47
5. Step 5: Solve for x
   x = 126,009,105.47/12,799.38
6. Step 6: Final answer
   x = 9,844.94