Finding the Fourth Proportional to 9,279.52, 12,805.70 and 5,087.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.52 : 12,805.70 = 5,087.76 : x
2. Step 2: Convert to fraction form
   9,279.52/12,805.70 = 5,087.76/x
3. Step 3: Cross multiply
   9,279.52x = 12,805.70 × 5,087.76
4. Step 4: Simplify right side
   9,279.52x = 65,152,328.23
5. Step 5: Solve for x
   x = 65,152,328.23/9,279.52
6. Step 6: Final answer
   x = 7,021.09