Finding the Fourth Proportional to 10,790.50, 14,894.94 and 7,980.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,790.50 : 14,894.94 = 7,980.49 : x
2. Step 2: Convert to fraction form
   10,790.50/14,894.94 = 7,980.49/x
3. Step 3: Cross multiply
   10,790.50x = 14,894.94 × 7,980.49
4. Step 4: Simplify right side
   10,790.50x = 118,868,923.38
5. Step 5: Solve for x
   x = 118,868,923.38/10,790.50
6. Step 6: Final answer
   x = 11,016.07