Finding the Fourth Proportional to 10,816.17, 16,227.13 and 3,420.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,816.17 : 16,227.13 = 3,420.76 : x
2. Step 2: Convert to fraction form
   10,816.17/16,227.13 = 3,420.76/x
3. Step 3: Cross multiply
   10,816.17x = 16,227.13 × 3,420.76
4. Step 4: Simplify right side
   10,816.17x = 55,509,117.22
5. Step 5: Solve for x
   x = 55,509,117.22/10,816.17
6. Step 6: Final answer
   x = 5,132.05