Finding the Fourth Proportional to 13,820.70, 20,723.69 and 5,496.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,820.70 : 20,723.69 = 5,496.42 : x
2. Step 2: Convert to fraction form
   13,820.70/20,723.69 = 5,496.42/x
3. Step 3: Cross multiply
   13,820.70x = 20,723.69 × 5,496.42
4. Step 4: Simplify right side
   13,820.70x = 113,906,117.93
5. Step 5: Solve for x
   x = 113,906,117.93/13,820.70
6. Step 6: Final answer
   x = 8,241.70