Finding the Fourth Proportional to 10,766.93, 14,878.89 and 8,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,766.93 : 14,878.89 = 8,109.72 : x
2. Step 2: Convert to fraction form
   10,766.93/14,878.89 = 8,109.72/x
3. Step 3: Cross multiply
   10,766.93x = 14,878.89 × 8,109.72
4. Step 4: Simplify right side
   10,766.93x = 120,663,631.81
5. Step 5: Solve for x
   x = 120,663,631.81/10,766.93
6. Step 6: Final answer
   x = 11,206.88