Finding the Fourth Proportional to 12,424.15, 18,625.69 and 5,398.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,424.15 : 18,625.69 = 5,398.88 : x
2. Step 2: Convert to fraction form
   12,424.15/18,625.69 = 5,398.88/x
3. Step 3: Cross multiply
   12,424.15x = 18,625.69 × 5,398.88
4. Step 4: Simplify right side
   12,424.15x = 100,557,758.60
5. Step 5: Solve for x
   x = 100,557,758.60/12,424.15
6. Step 6: Final answer
   x = 8,093.74