Finding the Fourth Proportional to 3,940.56, 5,398.55 and 3,792.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.56 : 5,398.55 = 3,792.84 : x
2. Step 2: Convert to fraction form
   3,940.56/5,398.55 = 3,792.84/x
3. Step 3: Cross multiply
   3,940.56x = 5,398.55 × 3,792.84
4. Step 4: Simplify right side
   3,940.56x = 20,475,817.42
5. Step 5: Solve for x
   x = 20,475,817.42/3,940.56
6. Step 6: Final answer
   x = 5,196.17