Finding the Fourth Proportional to 10,815.17, 16,225.63 and 3,419.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,815.17 : 16,225.63 = 3,419.76 : x
2. Step 2: Convert to fraction form
   10,815.17/16,225.63 = 3,419.76/x
3. Step 3: Cross multiply
   10,815.17x = 16,225.63 × 3,419.76
4. Step 4: Simplify right side
   10,815.17x = 55,487,751.90
5. Step 5: Solve for x
   x = 55,487,751.90/10,815.17
6. Step 6: Final answer
   x = 5,130.55