Finding the Fourth Proportional to 11,358.14, 17,039.49 and 3,960.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,358.14 : 17,039.49 = 3,960.61 : x
2. Step 2: Convert to fraction form
   11,358.14/17,039.49 = 3,960.61/x
3. Step 3: Cross multiply
   11,358.14x = 17,039.49 × 3,960.61
4. Step 4: Simplify right side
   11,358.14x = 67,486,731.89
5. Step 5: Solve for x
   x = 67,486,731.89/11,358.14
6. Step 6: Final answer
   x = 5,941.71