Finding the Fourth Proportional to 9,218.57, 12,721.59 and 5,026.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,218.57 : 12,721.59 = 5,026.82 : x
2. Step 2: Convert to fraction form
   9,218.57/12,721.59 = 5,026.82/x
3. Step 3: Cross multiply
   9,218.57x = 12,721.59 × 5,026.82
4. Step 4: Simplify right side
   9,218.57x = 63,949,143.04
5. Step 5: Solve for x
   x = 63,949,143.04/9,218.57
6. Step 6: Final answer
   x = 6,936.99