Finding the Fourth Proportional to 11,401.56, 17,102.94 and 3,609.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,401.56 : 17,102.94 = 3,609.78 : x
2. Step 2: Convert to fraction form
   11,401.56/17,102.94 = 3,609.78/x
3. Step 3: Cross multiply
   11,401.56x = 17,102.94 × 3,609.78
4. Step 4: Simplify right side
   11,401.56x = 61,737,850.75
5. Step 5: Solve for x
   x = 61,737,850.75/11,401.56
6. Step 6: Final answer
   x = 5,414.86