Finding the Fourth Proportional to 10,776.65, 16,166.79 and 5,513.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,776.65 : 16,166.79 = 5,513.94 : x
2. Step 2: Convert to fraction form
   10,776.65/16,166.79 = 5,513.94/x
3. Step 3: Cross multiply
   10,776.65x = 16,166.79 × 5,513.94
4. Step 4: Simplify right side
   10,776.65x = 89,142,710.05
5. Step 5: Solve for x
   x = 89,142,710.05/10,776.65
6. Step 6: Final answer
   x = 8,271.84