Finding the Fourth Proportional to 3,851.12, 5,735.78 and 3,611.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.12 : 5,735.78 = 3,611.36 : x
2. Step 2: Convert to fraction form
   3,851.12/5,735.78 = 3,611.36/x
3. Step 3: Cross multiply
   3,851.12x = 5,735.78 × 3,611.36
4. Step 4: Simplify right side
   3,851.12x = 20,713,966.46
5. Step 5: Solve for x
   x = 20,713,966.46/3,851.12
6. Step 6: Final answer
   x = 5,378.69