Finding the Fourth Proportional to 10,105.30, 13,943.46 and 5,628.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.30 : 13,943.46 = 5,628.94 : x
2. Step 2: Convert to fraction form
   10,105.30/13,943.46 = 5,628.94/x
3. Step 3: Cross multiply
   10,105.30x = 13,943.46 × 5,628.94
4. Step 4: Simplify right side
   10,105.30x = 78,486,864.87
5. Step 5: Solve for x
   x = 78,486,864.87/10,105.30
6. Step 6: Final answer
   x = 7,766.90