Finding the Fourth Proportional to 10,778.16, 16,168.38 and 2,986.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,778.16 : 16,168.38 = 2,986.98 : x
2. Step 2: Convert to fraction form
   10,778.16/16,168.38 = 2,986.98/x
3. Step 3: Cross multiply
   10,778.16x = 16,168.38 × 2,986.98
4. Step 4: Simplify right side
   10,778.16x = 48,294,627.69
5. Step 5: Solve for x
   x = 48,294,627.69/10,778.16
6. Step 6: Final answer
   x = 4,480.79