Finding the Fourth Proportional to 8,992.97, 12,411.83 and 5,217.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,992.97 : 12,411.83 = 5,217.31 : x
2. Step 2: Convert to fraction form
   8,992.97/12,411.83 = 5,217.31/x
3. Step 3: Cross multiply
   8,992.97x = 12,411.83 × 5,217.31
4. Step 4: Simplify right side
   8,992.97x = 64,756,393.34
5. Step 5: Solve for x
   x = 64,756,393.34/8,992.97
6. Step 6: Final answer
   x = 7,200.78