Finding the Fourth Proportional to 8,584.52, 12,810.86 and 8,535.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,584.52 : 12,810.86 = 8,535.24 : x
2. Step 2: Convert to fraction form
   8,584.52/12,810.86 = 8,535.24/x
3. Step 3: Cross multiply
   8,584.52x = 12,810.86 × 8,535.24
4. Step 4: Simplify right side
   8,584.52x = 109,343,754.04
5. Step 5: Solve for x
   x = 109,343,754.04/8,584.52
6. Step 6: Final answer
   x = 12,737.32