Finding the Fourth Proportional to 9,280.54, 12,806.67 and 5,087.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.54 : 12,806.67 = 5,087.98 : x
2. Step 2: Convert to fraction form
   9,280.54/12,806.67 = 5,087.98/x
3. Step 3: Cross multiply
   9,280.54x = 12,806.67 × 5,087.98
4. Step 4: Simplify right side
   9,280.54x = 65,160,080.83
5. Step 5: Solve for x
   x = 65,160,080.83/9,280.54
6. Step 6: Final answer
   x = 7,021.15