Finding the Fourth Proportional to 9,279.50, 12,805.71 and 5,087.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.50 : 12,805.71 = 5,087.75 : x
2. Step 2: Convert to fraction form
   9,279.50/12,805.71 = 5,087.75/x
3. Step 3: Cross multiply
   9,279.50x = 12,805.71 × 5,087.75
4. Step 4: Simplify right side
   9,279.50x = 65,152,251.05
5. Step 5: Solve for x
   x = 65,152,251.05/9,279.50
6. Step 6: Final answer
   x = 7,021.10