Finding the Fourth Proportional to 8,624.49, 12,934.03 and 5,718.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,624.49 : 12,934.03 = 5,718.21 : x
2. Step 2: Convert to fraction form
   8,624.49/12,934.03 = 5,718.21/x
3. Step 3: Cross multiply
   8,624.49x = 12,934.03 × 5,718.21
4. Step 4: Simplify right side
   8,624.49x = 73,959,499.69
5. Step 5: Solve for x
   x = 73,959,499.69/8,624.49
6. Step 6: Final answer
   x = 8,575.52