Finding the Fourth Proportional to 10,903.88, 16,355.97 and 3,112.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,903.88 : 16,355.97 = 3,112.71 : x
2. Step 2: Convert to fraction form
   10,903.88/16,355.97 = 3,112.71/x
3. Step 3: Cross multiply
   10,903.88x = 16,355.97 × 3,112.71
4. Step 4: Simplify right side
   10,903.88x = 50,911,391.38
5. Step 5: Solve for x
   x = 50,911,391.38/10,903.88
6. Step 6: Final answer
   x = 4,669.11