Finding the Fourth Proportional to 12,584.80, 17,368.72 and 7,279.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,584.80 : 17,368.72 = 7,279.95 : x
2. Step 2: Convert to fraction form
   12,584.80/17,368.72 = 7,279.95/x
3. Step 3: Cross multiply
   12,584.80x = 17,368.72 × 7,279.95
4. Step 4: Simplify right side
   12,584.80x = 126,443,413.16
5. Step 5: Solve for x
   x = 126,443,413.16/12,584.80
6. Step 6: Final answer
   x = 10,047.31