Finding the Fourth Proportional to 5,399.86, 7,452.15 and 4,071.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,399.86 : 7,452.15 = 4,071.22 : x
2. Step 2: Convert to fraction form
   5,399.86/7,452.15 = 4,071.22/x
3. Step 3: Cross multiply
   5,399.86x = 7,452.15 × 4,071.22
4. Step 4: Simplify right side
   5,399.86x = 30,339,342.12
5. Step 5: Solve for x
   x = 30,339,342.12/5,399.86
6. Step 6: Final answer
   x = 5,618.54