Finding the Fourth Proportional to 6,128.73, 8,455.17 and 4,003.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.73 : 8,455.17 = 4,003.56 : x
2. Step 2: Convert to fraction form
   6,128.73/8,455.17 = 4,003.56/x
3. Step 3: Cross multiply
   6,128.73x = 8,455.17 × 4,003.56
4. Step 4: Simplify right side
   6,128.73x = 33,850,780.41
5. Step 5: Solve for x
   x = 33,850,780.41/6,128.73
6. Step 6: Final answer
   x = 5,523.29