Finding the Fourth Proportional to 6,128.95, 9,173.85 and 3,313.93

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.95 : 9,173.85 = 3,313.93 : x
2. Step 2: Convert to fraction form
   6,128.95/9,173.85 = 3,313.93/x
3. Step 3: Cross multiply
   6,128.95x = 9,173.85 × 3,313.93
4. Step 4: Simplify right side
   6,128.95x = 30,401,496.73
5. Step 5: Solve for x
   x = 30,401,496.73/6,128.95
6. Step 6: Final answer
   x = 4,960.31