Finding the Fourth Proportional to 11,005.79, 16,509.98 and 3,506.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,005.79 : 16,509.98 = 3,506.73 : x
2. Step 2: Convert to fraction form
   11,005.79/16,509.98 = 3,506.73/x
3. Step 3: Cross multiply
   11,005.79x = 16,509.98 × 3,506.73
4. Step 4: Simplify right side
   11,005.79x = 57,895,989.02
5. Step 5: Solve for x
   x = 57,895,989.02/11,005.79
6. Step 6: Final answer
   x = 5,260.51