Finding the Fourth Proportional to 10,826.96, 16,240.23 and 3,431.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,826.96 : 16,240.23 = 3,431.88 : x
2. Step 2: Convert to fraction form
   10,826.96/16,240.23 = 3,431.88/x
3. Step 3: Cross multiply
   10,826.96x = 16,240.23 × 3,431.88
4. Step 4: Simplify right side
   10,826.96x = 55,734,520.53
5. Step 5: Solve for x
   x = 55,734,520.53/10,826.96
6. Step 6: Final answer
   x = 5,147.76