Finding the Fourth Proportional to 3,786.62, 5,670.34 and 3,168.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.62 : 5,670.34 = 3,168.79 : x
2. Step 2: Convert to fraction form
   3,786.62/5,670.34 = 3,168.79/x
3. Step 3: Cross multiply
   3,786.62x = 5,670.34 × 3,168.79
4. Step 4: Simplify right side
   3,786.62x = 17,968,094.59
5. Step 5: Solve for x
   x = 17,968,094.59/3,786.62
6. Step 6: Final answer
   x = 4,745.16