Finding the Fourth Proportional to 5,111.28, 7,662.08 and 3,859.92

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.28 : 7,662.08 = 3,859.92 : x
2. Step 2: Convert to fraction form
   5,111.28/7,662.08 = 3,859.92/x
3. Step 3: Cross multiply
   5,111.28x = 7,662.08 × 3,859.92
4. Step 4: Simplify right side
   5,111.28x = 29,575,015.83
5. Step 5: Solve for x
   x = 29,575,015.83/5,111.28
6. Step 6: Final answer
   x = 5,786.22