Finding the Fourth Proportional to 13,871.97, 20,804.85 and 4,009.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,871.97 : 20,804.85 = 4,009.05 : x
2. Step 2: Convert to fraction form
   13,871.97/20,804.85 = 4,009.05/x
3. Step 3: Cross multiply
   13,871.97x = 20,804.85 × 4,009.05
4. Step 4: Simplify right side
   13,871.97x = 83,407,683.89
5. Step 5: Solve for x
   x = 83,407,683.89/13,871.97
6. Step 6: Final answer
   x = 6,012.68