Finding the Fourth Proportional to 10,855.35, 14,982.72 and 6,607.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.35 : 14,982.72 = 6,607.78 : x
2. Step 2: Convert to fraction form
   10,855.35/14,982.72 = 6,607.78/x
3. Step 3: Cross multiply
   10,855.35x = 14,982.72 × 6,607.78
4. Step 4: Simplify right side
   10,855.35x = 99,002,517.56
5. Step 5: Solve for x
   x = 99,002,517.56/10,855.35
6. Step 6: Final answer
   x = 9,120.16