Finding the Fourth Proportional to 10,801.81, 16,204.38 and 3,405.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,801.81 : 16,204.38 = 3,405.61 : x
2. Step 2: Convert to fraction form
   10,801.81/16,204.38 = 3,405.61/x
3. Step 3: Cross multiply
   10,801.81x = 16,204.38 × 3,405.61
4. Step 4: Simplify right side
   10,801.81x = 55,185,798.57
5. Step 5: Solve for x
   x = 55,185,798.57/10,801.81
6. Step 6: Final answer
   x = 5,108.94