Finding the Fourth Proportional to 11,724.92, 17,585.46 and 3,515

Step by Step Solution

1. Step 1: Write the proportion equation
   11,724.92 : 17,585.46 = 3,515 : x
2. Step 2: Convert to fraction form
   11,724.92/17,585.46 = 3,515/x
3. Step 3: Cross multiply
   11,724.92x = 17,585.46 × 3,515
4. Step 4: Simplify right side
   11,724.92x = 61,812,891.90
5. Step 5: Solve for x
   x = 61,812,891.90/11,724.92
6. Step 6: Final answer
   x = 5,271.92