Finding the Fourth Proportional to 5,806.49, 8,715.87 and 3,616.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,806.49 : 8,715.87 = 3,616.72 : x
2. Step 2: Convert to fraction form
   5,806.49/8,715.87 = 3,616.72/x
3. Step 3: Cross multiply
   5,806.49x = 8,715.87 × 3,616.72
4. Step 4: Simplify right side
   5,806.49x = 31,522,839.56
5. Step 5: Solve for x
   x = 31,522,839.56/5,806.49
6. Step 6: Final answer
   x = 5,428.90