Finding the Fourth Proportional to 12,380.50, 17,084.78 and 7,074.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.50 : 17,084.78 = 7,074.97 : x
2. Step 2: Convert to fraction form
   12,380.50/17,084.78 = 7,074.97/x
3. Step 3: Cross multiply
   12,380.50x = 17,084.78 × 7,074.97
4. Step 4: Simplify right side
   12,380.50x = 120,874,305.96
5. Step 5: Solve for x
   x = 120,874,305.96/12,380.50
6. Step 6: Final answer
   x = 9,763.28