Finding the Fourth Proportional to 13,074.26, 18,042.51 and 7,105.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,074.26 : 18,042.51 = 7,105.79 : x
2. Step 2: Convert to fraction form
   13,074.26/18,042.51 = 7,105.79/x
3. Step 3: Cross multiply
   13,074.26x = 18,042.51 × 7,105.79
4. Step 4: Simplify right side
   13,074.26x = 128,206,196.92
5. Step 5: Solve for x
   x = 128,206,196.92/13,074.26
6. Step 6: Final answer
   x = 9,806.00