Finding the Fourth Proportional to 13,158.28, 18,149.94 and 7,849

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.28 : 18,149.94 = 7,849 : x
2. Step 2: Convert to fraction form
   13,158.28/18,149.94 = 7,849/x
3. Step 3: Cross multiply
   13,158.28x = 18,149.94 × 7,849
4. Step 4: Simplify right side
   13,158.28x = 142,458,879.06
5. Step 5: Solve for x
   x = 142,458,879.06/13,158.28
6. Step 6: Final answer
   x = 10,826.56