Finding the Fourth Proportional to 9,688.72, 13,344.97 and 7,446.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,688.72 : 13,344.97 = 7,446.31 : x
2. Step 2: Convert to fraction form
   9,688.72/13,344.97 = 7,446.31/x
3. Step 3: Cross multiply
   9,688.72x = 13,344.97 × 7,446.31
4. Step 4: Simplify right side
   9,688.72x = 99,370,783.56
5. Step 5: Solve for x
   x = 99,370,783.56/9,688.72
6. Step 6: Final answer
   x = 10,256.34