Finding the Fourth Proportional to 10,776.50, 16,165.14 and 3,380.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,776.50 : 16,165.14 = 3,380.78 : x
2. Step 2: Convert to fraction form
   10,776.50/16,165.14 = 3,380.78/x
3. Step 3: Cross multiply
   10,776.50x = 16,165.14 × 3,380.78
4. Step 4: Simplify right side
   10,776.50x = 54,650,782.01
5. Step 5: Solve for x
   x = 54,650,782.01/10,776.50
6. Step 6: Final answer
   x = 5,071.29