Finding the Fourth Proportional to 10,829.46, 16,245.56 and 3,431.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,829.46 : 16,245.56 = 3,431.30 : x
2. Step 2: Convert to fraction form
   10,829.46/16,245.56 = 3,431.30/x
3. Step 3: Cross multiply
   10,829.46x = 16,245.56 × 3,431.30
4. Step 4: Simplify right side
   10,829.46x = 55,743,317.38
5. Step 5: Solve for x
   x = 55,743,317.38/10,829.46
6. Step 6: Final answer
   x = 5,147.38