Finding the Fourth Proportional to 5,405.36, 7,456.20 and 4,074.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,405.36 : 7,456.20 = 4,074.89 : x
2. Step 2: Convert to fraction form
   5,405.36/7,456.20 = 4,074.89/x
3. Step 3: Cross multiply
   5,405.36x = 7,456.20 × 4,074.89
4. Step 4: Simplify right side
   5,405.36x = 30,383,194.82
5. Step 5: Solve for x
   x = 30,383,194.82/5,405.36
6. Step 6: Final answer
   x = 5,620.94