Finding the Fourth Proportional to 11,109.70, 16,665.41 and 3,714.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,109.70 : 16,665.41 = 3,714.20 : x
2. Step 2: Convert to fraction form
   11,109.70/16,665.41 = 3,714.20/x
3. Step 3: Cross multiply
   11,109.70x = 16,665.41 × 3,714.20
4. Step 4: Simplify right side
   11,109.70x = 61,898,563.92
5. Step 5: Solve for x
   x = 61,898,563.92/11,109.70
6. Step 6: Final answer
   x = 5,571.58