Finding the Fourth Proportional to 10,776.35, 14,878.20 and 7,379.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,776.35 : 14,878.20 = 7,379.05 : x
2. Step 2: Convert to fraction form
   10,776.35/14,878.20 = 7,379.05/x
3. Step 3: Cross multiply
   10,776.35x = 14,878.20 × 7,379.05
4. Step 4: Simplify right side
   10,776.35x = 109,786,890.70
5. Step 5: Solve for x
   x = 109,786,890.70/10,776.35
6. Step 6: Final answer
   x = 10,187.76