Finding the Fourth Proportional to 8,584.59, 11,843.60 and 7,019.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,584.59 : 11,843.60 = 7,019.31 : x
2. Step 2: Convert to fraction form
   8,584.59/11,843.60 = 7,019.31/x
3. Step 3: Cross multiply
   8,584.59x = 11,843.60 × 7,019.31
4. Step 4: Simplify right side
   8,584.59x = 83,133,864.82
5. Step 5: Solve for x
   x = 83,133,864.82/8,584.59
6. Step 6: Final answer
   x = 9,684.08