Finding the Fourth Proportional to 11,209.06, 16,805.31 and 3,811.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,209.06 : 16,805.31 = 3,811.54 : x
2. Step 2: Convert to fraction form
   11,209.06/16,805.31 = 3,811.54/x
3. Step 3: Cross multiply
   11,209.06x = 16,805.31 × 3,811.54
4. Step 4: Simplify right side
   11,209.06x = 64,054,111.28
5. Step 5: Solve for x
   x = 64,054,111.28/11,209.06
6. Step 6: Final answer
   x = 5,714.49