Finding the Fourth Proportional to 9,279.54, 12,805.29 and 5,086.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.54 : 12,805.29 = 5,086.98 : x
2. Step 2: Convert to fraction form
   9,279.54/12,805.29 = 5,086.98/x
3. Step 3: Cross multiply
   9,279.54x = 12,805.29 × 5,086.98
4. Step 4: Simplify right side
   9,279.54x = 65,140,254.12
5. Step 5: Solve for x
   x = 65,140,254.12/9,279.54
6. Step 6: Final answer
   x = 7,019.77