Finding the Fourth Proportional to 5,198.37, 7,173.72 and 2,840.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,198.37 : 7,173.72 = 2,840.51 : x
2. Step 2: Convert to fraction form
   5,198.37/7,173.72 = 2,840.51/x
3. Step 3: Cross multiply
   5,198.37x = 7,173.72 × 2,840.51
4. Step 4: Simplify right side
   5,198.37x = 20,377,041.33
5. Step 5: Solve for x
   x = 20,377,041.33/5,198.37
6. Step 6: Final answer
   x = 3,919.89