Finding the Fourth Proportional to 10,819.76, 16,230.72 and 3,426.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,819.76 : 16,230.72 = 3,426.08 : x
2. Step 2: Convert to fraction form
   10,819.76/16,230.72 = 3,426.08/x
3. Step 3: Cross multiply
   10,819.76x = 16,230.72 × 3,426.08
4. Step 4: Simplify right side
   10,819.76x = 55,607,745.18
5. Step 5: Solve for x
   x = 55,607,745.18/10,819.76
6. Step 6: Final answer
   x = 5,139.46