Finding the Fourth Proportional to 6,112.28, 8,431.72 and 3,873.35

Step by Step Solution

1. Step 1: Write the proportion equation
   6,112.28 : 8,431.72 = 3,873.35 : x
2. Step 2: Convert to fraction form
   6,112.28/8,431.72 = 3,873.35/x
3. Step 3: Cross multiply
   6,112.28x = 8,431.72 × 3,873.35
4. Step 4: Simplify right side
   6,112.28x = 32,659,014.06
5. Step 5: Solve for x
   x = 32,659,014.06/6,112.28
6. Step 6: Final answer
   x = 5,343.18