Finding the Fourth Proportional to 10,906.47, 16,356.96 and 3,511.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.47 : 16,356.96 = 3,511.71 : x
2. Step 2: Convert to fraction form
   10,906.47/16,356.96 = 3,511.71/x
3. Step 3: Cross multiply
   10,906.47x = 16,356.96 × 3,511.71
4. Step 4: Simplify right side
   10,906.47x = 57,440,900.00
5. Step 5: Solve for x
   x = 57,440,900.00/10,906.47
6. Step 6: Final answer
   x = 5,266.68