Finding the Fourth Proportional to 11,411.92, 17,118.50 and 3,519.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.92 : 17,118.50 = 3,519.87 : x
2. Step 2: Convert to fraction form
   11,411.92/17,118.50 = 3,519.87/x
3. Step 3: Cross multiply
   11,411.92x = 17,118.50 × 3,519.87
4. Step 4: Simplify right side
   11,411.92x = 60,254,894.60
5. Step 5: Solve for x
   x = 60,254,894.60/11,411.92
6. Step 6: Final answer
   x = 5,280.00