Finding the Fourth Proportional to 5,392.72, 7,438.56 and 3,401.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,392.72 : 7,438.56 = 3,401.60 : x
2. Step 2: Convert to fraction form
   5,392.72/7,438.56 = 3,401.60/x
3. Step 3: Cross multiply
   5,392.72x = 7,438.56 × 3,401.60
4. Step 4: Simplify right side
   5,392.72x = 25,303,005.70
5. Step 5: Solve for x
   x = 25,303,005.70/5,392.72
6. Step 6: Final answer
   x = 4,692.07