Finding the Fourth Proportional to 5,621.82, 7,756.47 and 3,231.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,621.82 : 7,756.47 = 3,231.42 : x
2. Step 2: Convert to fraction form
   5,621.82/7,756.47 = 3,231.42/x
3. Step 3: Cross multiply
   5,621.82x = 7,756.47 × 3,231.42
4. Step 4: Simplify right side
   5,621.82x = 25,064,412.29
5. Step 5: Solve for x
   x = 25,064,412.29/5,621.82
6. Step 6: Final answer
   x = 4,458.42