Finding the Fourth Proportional to 9,279.38, 12,805.61 and 5,087.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.38 : 12,805.61 = 5,087.63 : x
2. Step 2: Convert to fraction form
   9,279.38/12,805.61 = 5,087.63/x
3. Step 3: Cross multiply
   9,279.38x = 12,805.61 × 5,087.63
4. Step 4: Simplify right side
   9,279.38x = 65,150,116.14
5. Step 5: Solve for x
   x = 65,150,116.14/9,279.38
6. Step 6: Final answer
   x = 7,020.96