Finding the Fourth Proportional to 13,843.53, 20,752.88 and 5,072.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,843.53 : 20,752.88 = 5,072.31 : x
2. Step 2: Convert to fraction form
   13,843.53/20,752.88 = 5,072.31/x
3. Step 3: Cross multiply
   13,843.53x = 20,752.88 × 5,072.31
4. Step 4: Simplify right side
   13,843.53x = 105,265,015.39
5. Step 5: Solve for x
   x = 105,265,015.39/13,843.53
6. Step 6: Final answer
   x = 7,603.91