Finding the Fourth Proportional to 10,538.10, 15,803.10 and 3,960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,538.10 : 15,803.10 = 3,960.72 : x
2. Step 2: Convert to fraction form
   10,538.10/15,803.10 = 3,960.72/x
3. Step 3: Cross multiply
   10,538.10x = 15,803.10 × 3,960.72
4. Step 4: Simplify right side
   10,538.10x = 62,591,654.23
5. Step 5: Solve for x
   x = 62,591,654.23/10,538.10
6. Step 6: Final answer
   x = 5,939.56