Finding the Fourth Proportional to 5,131.37, 7,698.67 and 2,211.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.37 : 7,698.67 = 2,211.05 : x
2. Step 2: Convert to fraction form
   5,131.37/7,698.67 = 2,211.05/x
3. Step 3: Cross multiply
   5,131.37x = 7,698.67 × 2,211.05
4. Step 4: Simplify right side
   5,131.37x = 17,022,144.30
5. Step 5: Solve for x
   x = 17,022,144.30/5,131.37
6. Step 6: Final answer
   x = 3,317.27