Finding the Fourth Proportional to 5,679.05, 8,500.75 and 3,591.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,679.05 : 8,500.75 = 3,591.81 : x
2. Step 2: Convert to fraction form
   5,679.05/8,500.75 = 3,591.81/x
3. Step 3: Cross multiply
   5,679.05x = 8,500.75 × 3,591.81
4. Step 4: Simplify right side
   5,679.05x = 30,533,069.88
5. Step 5: Solve for x
   x = 30,533,069.88/5,679.05
6. Step 6: Final answer
   x = 5,376.44