Finding the Fourth Proportional to 10,105.11, 13,934.30 and 5,912.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.11 : 13,934.30 = 5,912.55 : x
2. Step 2: Convert to fraction form
   10,105.11/13,934.30 = 5,912.55/x
3. Step 3: Cross multiply
   10,105.11x = 13,934.30 × 5,912.55
4. Step 4: Simplify right side
   10,105.11x = 82,387,215.90
5. Step 5: Solve for x
   x = 82,387,215.90/10,105.11
6. Step 6: Final answer
   x = 8,153.03