Finding the Fourth Proportional to 10,107.02, 13,947.57 and 5,631.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,107.02 : 13,947.57 = 5,631.28 : x
2. Step 2: Convert to fraction form
   10,107.02/13,947.57 = 5,631.28/x
3. Step 3: Cross multiply
   10,107.02x = 13,947.57 × 5,631.28
4. Step 4: Simplify right side
   10,107.02x = 78,542,637.12
5. Step 5: Solve for x
   x = 78,542,637.12/10,107.02
6. Step 6: Final answer
   x = 7,771.10