Finding the Fourth Proportional to 9,279.42, 12,805.56 and 5,087.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.42 : 12,805.56 = 5,087.67 : x
2. Step 2: Convert to fraction form
   9,279.42/12,805.56 = 5,087.67/x
3. Step 3: Cross multiply
   9,279.42x = 12,805.56 × 5,087.67
4. Step 4: Simplify right side
   9,279.42x = 65,150,463.45
5. Step 5: Solve for x
   x = 65,150,463.45/9,279.42
6. Step 6: Final answer
   x = 7,020.96