Finding the Fourth Proportional to 10,820.03, 16,231.73 and 3,423.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,820.03 : 16,231.73 = 3,423.78 : x
2. Step 2: Convert to fraction form
   10,820.03/16,231.73 = 3,423.78/x
3. Step 3: Cross multiply
   10,820.03x = 16,231.73 × 3,423.78
4. Step 4: Simplify right side
   10,820.03x = 55,573,872.54
5. Step 5: Solve for x
   x = 55,573,872.54/10,820.03
6. Step 6: Final answer
   x = 5,136.20