Finding the Fourth Proportional to 16,778.79, 25,176.83 and 9,280.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,778.79 : 25,176.83 = 9,280.98 : x
2. Step 2: Convert to fraction form
   16,778.79/25,176.83 = 9,280.98/x
3. Step 3: Cross multiply
   16,778.79x = 25,176.83 × 9,280.98
4. Step 4: Simplify right side
   16,778.79x = 233,665,609.29
5. Step 5: Solve for x
   x = 233,665,609.29/16,778.79
6. Step 6: Final answer
   x = 13,926.25