Finding the Fourth Proportional to 5,268.71, 7,857.26 and 5,198.09

Step by Step Solution

1. Step 1: Write the proportion equation
   5,268.71 : 7,857.26 = 5,198.09 : x
2. Step 2: Convert to fraction form
   5,268.71/7,857.26 = 5,198.09/x
3. Step 3: Cross multiply
   5,268.71x = 7,857.26 × 5,198.09
4. Step 4: Simplify right side
   5,268.71x = 40,842,718.34
5. Step 5: Solve for x
   x = 40,842,718.34/5,268.71
6. Step 6: Final answer
   x = 7,751.94