Finding the Fourth Proportional to 5,365.24, 7,404.24 and 3,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,365.24 : 7,404.24 = 3,128.56 : x
2. Step 2: Convert to fraction form
   5,365.24/7,404.24 = 3,128.56/x
3. Step 3: Cross multiply
   5,365.24x = 7,404.24 × 3,128.56
4. Step 4: Simplify right side
   5,365.24x = 23,164,609.09
5. Step 5: Solve for x
   x = 23,164,609.09/5,365.24
6. Step 6: Final answer
   x = 4,317.53