Finding the Fourth Proportional to 10,440.09, 14,390.96 and 7,912.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.09 : 14,390.96 = 7,912.08 : x
2. Step 2: Convert to fraction form
   10,440.09/14,390.96 = 7,912.08/x
3. Step 3: Cross multiply
   10,440.09x = 14,390.96 × 7,912.08
4. Step 4: Simplify right side
   10,440.09x = 113,862,426.80
5. Step 5: Solve for x
   x = 113,862,426.80/10,440.09
6. Step 6: Final answer
   x = 10,906.27