Finding the Fourth Proportional to 10,107.79, 13,949.33 and 5,631.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,107.79 : 13,949.33 = 5,631.73 : x
2. Step 2: Convert to fraction form
   10,107.79/13,949.33 = 5,631.73/x
3. Step 3: Cross multiply
   10,107.79x = 13,949.33 × 5,631.73
4. Step 4: Simplify right side
   10,107.79x = 78,558,797.21
5. Step 5: Solve for x
   x = 78,558,797.21/10,107.79
6. Step 6: Final answer
   x = 7,772.11