Finding the Fourth Proportional to 6,128.04, 8,455.22 and 3,609.94

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.04 : 8,455.22 = 3,609.94 : x
2. Step 2: Convert to fraction form
   6,128.04/8,455.22 = 3,609.94/x
3. Step 3: Cross multiply
   6,128.04x = 8,455.22 × 3,609.94
4. Step 4: Simplify right side
   6,128.04x = 30,522,836.89
5. Step 5: Solve for x
   x = 30,522,836.89/6,128.04
6. Step 6: Final answer
   x = 4,980.85