Finding the Fourth Proportional to 11,205.89, 16,808.43 and 3,414.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,205.89 : 16,808.43 = 3,414.50 : x
2. Step 2: Convert to fraction form
   11,205.89/16,808.43 = 3,414.50/x
3. Step 3: Cross multiply
   11,205.89x = 16,808.43 × 3,414.50
4. Step 4: Simplify right side
   11,205.89x = 57,392,384.24
5. Step 5: Solve for x
   x = 57,392,384.24/11,205.89
6. Step 6: Final answer
   x = 5,121.63