Finding the Fourth Proportional to 5,150.11, 7,105.47 and 2,911.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,150.11 : 7,105.47 = 2,911.76 : x
2. Step 2: Convert to fraction form
   5,150.11/7,105.47 = 2,911.76/x
3. Step 3: Cross multiply
   5,150.11x = 7,105.47 × 2,911.76
4. Step 4: Simplify right side
   5,150.11x = 20,689,423.33
5. Step 5: Solve for x
   x = 20,689,423.33/5,150.11
6. Step 6: Final answer
   x = 4,017.28