Finding the Fourth Proportional to 10,581.38, 15,872.72 and 3,560.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.38 : 15,872.72 = 3,560.81 : x
2. Step 2: Convert to fraction form
   10,581.38/15,872.72 = 3,560.81/x
3. Step 3: Cross multiply
   10,581.38x = 15,872.72 × 3,560.81
4. Step 4: Simplify right side
   10,581.38x = 56,519,740.10
5. Step 5: Solve for x
   x = 56,519,740.10/10,581.38
6. Step 6: Final answer
   x = 5,341.43