Finding the Fourth Proportional to 13,810.72, 20,704.20 and 5,496.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,810.72 : 20,704.20 = 5,496.61 : x
2. Step 2: Convert to fraction form
   13,810.72/20,704.20 = 5,496.61/x
3. Step 3: Cross multiply
   13,810.72x = 20,704.20 × 5,496.61
4. Step 4: Simplify right side
   13,810.72x = 113,802,912.76
5. Step 5: Solve for x
   x = 113,802,912.76/13,810.72
6. Step 6: Final answer
   x = 8,240.19