Finding the Fourth Proportional to 9,336.49, 12,884.31 and 5,087.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,336.49 : 12,884.31 = 5,087.55 : x
2. Step 2: Convert to fraction form
   9,336.49/12,884.31 = 5,087.55/x
3. Step 3: Cross multiply
   9,336.49x = 12,884.31 × 5,087.55
4. Step 4: Simplify right side
   9,336.49x = 65,549,571.34
5. Step 5: Solve for x
   x = 65,549,571.34/9,336.49
6. Step 6: Final answer
   x = 7,020.79