Finding the Fourth Proportional to 10,205.74, 15,301.41 and 3,960.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,205.74 : 15,301.41 = 3,960.55 : x
2. Step 2: Convert to fraction form
   10,205.74/15,301.41 = 3,960.55/x
3. Step 3: Cross multiply
   10,205.74x = 15,301.41 × 3,960.55
4. Step 4: Simplify right side
   10,205.74x = 60,601,999.38
5. Step 5: Solve for x
   x = 60,601,999.38/10,205.74
6. Step 6: Final answer
   x = 5,938.03