Finding the Fourth Proportional to 10,835.28, 16,253.52 and 3,439.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,835.28 : 16,253.52 = 3,439.20 : x
2. Step 2: Convert to fraction form
   10,835.28/16,253.52 = 3,439.20/x
3. Step 3: Cross multiply
   10,835.28x = 16,253.52 × 3,439.20
4. Step 4: Simplify right side
   10,835.28x = 55,899,105.98
5. Step 5: Solve for x
   x = 55,899,105.98/10,835.28
6. Step 6: Final answer
   x = 5,158.99