Finding the Fourth Proportional to 10,440.34, 14,391.29 and 7,912.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.34 : 14,391.29 = 7,912.33 : x
2. Step 2: Convert to fraction form
   10,440.34/14,391.29 = 7,912.33/x
3. Step 3: Cross multiply
   10,440.34x = 14,391.29 × 7,912.33
4. Step 4: Simplify right side
   10,440.34x = 113,868,619.41
5. Step 5: Solve for x
   x = 113,868,619.41/10,440.34
6. Step 6: Final answer
   x = 10,906.60