Finding the Fourth Proportional to 10,853.21, 16,274.42 and 3,456.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,853.21 : 16,274.42 = 3,456.71 : x
2. Step 2: Convert to fraction form
   10,853.21/16,274.42 = 3,456.71/x
3. Step 3: Cross multiply
   10,853.21x = 16,274.42 × 3,456.71
4. Step 4: Simplify right side
   10,853.21x = 56,255,999.69
5. Step 5: Solve for x
   x = 56,255,999.69/10,853.21
6. Step 6: Final answer
   x = 5,183.35