Finding the Fourth Proportional to 6,128.49, 8,462.16 and 4,005.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.49 : 8,462.16 = 4,005.48 : x
2. Step 2: Convert to fraction form
   6,128.49/8,462.16 = 4,005.48/x
3. Step 3: Cross multiply
   6,128.49x = 8,462.16 × 4,005.48
4. Step 4: Simplify right side
   6,128.49x = 33,895,012.64
5. Step 5: Solve for x
   x = 33,895,012.64/6,128.49
6. Step 6: Final answer
   x = 5,530.73