Finding the Fourth Proportional to 10,581.50, 15,873.04 and 3,561.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.50 : 15,873.04 = 3,561.49 : x
2. Step 2: Convert to fraction form
   10,581.50/15,873.04 = 3,561.49/x
3. Step 3: Cross multiply
   10,581.50x = 15,873.04 × 3,561.49
4. Step 4: Simplify right side
   10,581.50x = 56,531,598.22
5. Step 5: Solve for x
   x = 56,531,598.22/10,581.50
6. Step 6: Final answer
   x = 5,342.49