Finding the Fourth Proportional to 13,052.20, 18,003.82 and 7,743.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,052.20 : 18,003.82 = 7,743.25 : x
2. Step 2: Convert to fraction form
   13,052.20/18,003.82 = 7,743.25/x
3. Step 3: Cross multiply
   13,052.20x = 18,003.82 × 7,743.25
4. Step 4: Simplify right side
   13,052.20x = 139,408,079.22
5. Step 5: Solve for x
   x = 139,408,079.22/13,052.20
6. Step 6: Final answer
   x = 10,680.81