Finding the Fourth Proportional to 6,128.06, 8,455.39 and 3,608.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.06 : 8,455.39 = 3,608.42 : x
2. Step 2: Convert to fraction form
   6,128.06/8,455.39 = 3,608.42/x
3. Step 3: Cross multiply
   6,128.06x = 8,455.39 × 3,608.42
4. Step 4: Simplify right side
   6,128.06x = 30,510,547.09
5. Step 5: Solve for x
   x = 30,510,547.09/6,128.06
6. Step 6: Final answer
   x = 4,978.83