Finding the Fourth Proportional to 6,151.14, 8,489.34 and 3,885.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,151.14 : 8,489.34 = 3,885.78 : x
2. Step 2: Convert to fraction form
   6,151.14/8,489.34 = 3,885.78/x
3. Step 3: Cross multiply
   6,151.14x = 8,489.34 × 3,885.78
4. Step 4: Simplify right side
   6,151.14x = 32,987,707.59
5. Step 5: Solve for x
   x = 32,987,707.59/6,151.14
6. Step 6: Final answer
   x = 5,362.86