Finding the Fourth Proportional to 10,816.91, 16,225.25 and 3,421.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,816.91 : 16,225.25 = 3,421.37 : x
2. Step 2: Convert to fraction form
   10,816.91/16,225.25 = 3,421.37/x
3. Step 3: Cross multiply
   10,816.91x = 16,225.25 × 3,421.37
4. Step 4: Simplify right side
   10,816.91x = 55,512,583.59
5. Step 5: Solve for x
   x = 55,512,583.59/10,816.91
6. Step 6: Final answer
   x = 5,132.02