Finding the Fourth Proportional to 12,388.92, 18,570.84 and 5,365.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,388.92 : 18,570.84 = 5,365.82 : x
2. Step 2: Convert to fraction form
   12,388.92/18,570.84 = 5,365.82/x
3. Step 3: Cross multiply
   12,388.92x = 18,570.84 × 5,365.82
4. Step 4: Simplify right side
   12,388.92x = 99,647,784.69
5. Step 5: Solve for x
   x = 99,647,784.69/12,388.92
6. Step 6: Final answer
   x = 8,043.30