Finding the Fourth Proportional to 10,435.24, 14,389.38 and 7,921.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,435.24 : 14,389.38 = 7,921.96 : x
2. Step 2: Convert to fraction form
   10,435.24/14,389.38 = 7,921.96/x
3. Step 3: Cross multiply
   10,435.24x = 14,389.38 × 7,921.96
4. Step 4: Simplify right side
   10,435.24x = 113,992,092.78
5. Step 5: Solve for x
   x = 113,992,092.78/10,435.24
6. Step 6: Final answer
   x = 10,923.76