Finding the Fourth Proportional to 10,581.71, 15,873.35 and 3,561.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.71 : 15,873.35 = 3,561.69 : x
2. Step 2: Convert to fraction form
   10,581.71/15,873.35 = 3,561.69/x
3. Step 3: Cross multiply
   10,581.71x = 15,873.35 × 3,561.69
4. Step 4: Simplify right side
   10,581.71x = 56,535,951.96
5. Step 5: Solve for x
   x = 56,535,951.96/10,581.71
6. Step 6: Final answer
   x = 5,342.80