Finding the Fourth Proportional to 3,431.15, 5,117.72 and 3,327.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431.15 : 5,117.72 = 3,327.31 : x
2. Step 2: Convert to fraction form
   3,431.15/5,117.72 = 3,327.31/x
3. Step 3: Cross multiply
   3,431.15x = 5,117.72 × 3,327.31
4. Step 4: Simplify right side
   3,431.15x = 17,028,236.46
5. Step 5: Solve for x
   x = 17,028,236.46/3,431.15
6. Step 6: Final answer
   x = 4,962.84