Finding the Fourth Proportional to 5,390.48, 7,436.41 and 3,896.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,390.48 : 7,436.41 = 3,896.03 : x
2. Step 2: Convert to fraction form
   5,390.48/7,436.41 = 3,896.03/x
3. Step 3: Cross multiply
   5,390.48x = 7,436.41 × 3,896.03
4. Step 4: Simplify right side
   5,390.48x = 28,972,485.30
5. Step 5: Solve for x
   x = 28,972,485.30/5,390.48
6. Step 6: Final answer
   x = 5,374.75