Finding the Fourth Proportional to 11,431.78, 17,149.72 and 4,040.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,431.78 : 17,149.72 = 4,040.53 : x
2. Step 2: Convert to fraction form
   11,431.78/17,149.72 = 4,040.53/x
3. Step 3: Cross multiply
   11,431.78x = 17,149.72 × 4,040.53
4. Step 4: Simplify right side
   11,431.78x = 69,293,958.15
5. Step 5: Solve for x
   x = 69,293,958.15/11,431.78
6. Step 6: Final answer
   x = 6,061.52