Finding the Fourth Proportional to 10,440.94, 14,408.49 and 5,725.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.94 : 14,408.49 = 5,725.30 : x
2. Step 2: Convert to fraction form
   10,440.94/14,408.49 = 5,725.30/x
3. Step 3: Cross multiply
   10,440.94x = 14,408.49 × 5,725.30
4. Step 4: Simplify right side
   10,440.94x = 82,492,927.80
5. Step 5: Solve for x
   x = 82,492,927.80/10,440.94
6. Step 6: Final answer
   x = 7,900.91