Finding the Fourth Proportional to 10,815.16, 16,222.63 and 3,419.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,815.16 : 16,222.63 = 3,419.62 : x
2. Step 2: Convert to fraction form
   10,815.16/16,222.63 = 3,419.62/x
3. Step 3: Cross multiply
   10,815.16x = 16,222.63 × 3,419.62
4. Step 4: Simplify right side
   10,815.16x = 55,475,148.89
5. Step 5: Solve for x
   x = 55,475,148.89/10,815.16
6. Step 6: Final answer
   x = 5,129.39