Finding the Fourth Proportional to 10,440.09, 14,407.74 and 5,724.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.09 : 14,407.74 = 5,724.54 : x
2. Step 2: Convert to fraction form
   10,440.09/14,407.74 = 5,724.54/x
3. Step 3: Cross multiply
   10,440.09x = 14,407.74 × 5,724.54
4. Step 4: Simplify right side
   10,440.09x = 82,477,683.94
5. Step 5: Solve for x
   x = 82,477,683.94/10,440.09
6. Step 6: Final answer
   x = 7,900.09