Finding the Fourth Proportional to 10,440.21, 14,399.85 and 7,608.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.21 : 14,399.85 = 7,608.45 : x
2. Step 2: Convert to fraction form
   10,440.21/14,399.85 = 7,608.45/x
3. Step 3: Cross multiply
   10,440.21x = 14,399.85 × 7,608.45
4. Step 4: Simplify right side
   10,440.21x = 109,560,538.73
5. Step 5: Solve for x
   x = 109,560,538.73/10,440.21
6. Step 6: Final answer
   x = 10,494.09