Finding the Fourth Proportional to 10,711.78, 16,061.76 and 3,314.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,711.78 : 16,061.76 = 3,314.20 : x
2. Step 2: Convert to fraction form
   10,711.78/16,061.76 = 3,314.20/x
3. Step 3: Cross multiply
   10,711.78x = 16,061.76 × 3,314.20
4. Step 4: Simplify right side
   10,711.78x = 53,231,884.99
5. Step 5: Solve for x
   x = 53,231,884.99/10,711.78
6. Step 6: Final answer
   x = 4,969.47