Finding the Fourth Proportional to 13,662.72, 20,498.40 and 5,343.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,662.72 : 20,498.40 = 5,343.84 : x
2. Step 2: Convert to fraction form
   13,662.72/20,498.40 = 5,343.84/x
3. Step 3: Cross multiply
   13,662.72x = 20,498.40 × 5,343.84
4. Step 4: Simplify right side
   13,662.72x = 109,540,169.86
5. Step 5: Solve for x
   x = 109,540,169.86/13,662.72
6. Step 6: Final answer
   x = 8,017.45