Finding the Fourth Proportional to 10,806.30, 14,902.78 and 7,408.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,806.30 : 14,902.78 = 7,408.25 : x
2. Step 2: Convert to fraction form
   10,806.30/14,902.78 = 7,408.25/x
3. Step 3: Cross multiply
   10,806.30x = 14,902.78 × 7,408.25
4. Step 4: Simplify right side
   10,806.30x = 110,403,519.94
5. Step 5: Solve for x
   x = 110,403,519.94/10,806.30
6. Step 6: Final answer
   x = 10,216.59