Finding the Fourth Proportional to 10,836.88, 16,257.38 and 3,443.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,836.88 : 16,257.38 = 3,443.20 : x
2. Step 2: Convert to fraction form
   10,836.88/16,257.38 = 3,443.20/x
3. Step 3: Cross multiply
   10,836.88x = 16,257.38 × 3,443.20
4. Step 4: Simplify right side
   10,836.88x = 55,977,410.82
5. Step 5: Solve for x
   x = 55,977,410.82/10,836.88
6. Step 6: Final answer
   x = 5,165.45