Finding the Fourth Proportional to 3,756.78, 5,185.81 and 3,363.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,756.78 : 5,185.81 = 3,363.12 : x
2. Step 2: Convert to fraction form
   3,756.78/5,185.81 = 3,363.12/x
3. Step 3: Cross multiply
   3,756.78x = 5,185.81 × 3,363.12
4. Step 4: Simplify right side
   3,756.78x = 17,440,501.33
5. Step 5: Solve for x
   x = 17,440,501.33/3,756.78
6. Step 6: Final answer
   x = 4,642.41