Finding the Fourth Proportional to 8,383.86, 12,573.54 and 3,992.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,383.86 : 12,573.54 = 3,992.58 : x
2. Step 2: Convert to fraction form
   8,383.86/12,573.54 = 3,992.58/x
3. Step 3: Cross multiply
   8,383.86x = 12,573.54 × 3,992.58
4. Step 4: Simplify right side
   8,383.86x = 50,200,864.33
5. Step 5: Solve for x
   x = 50,200,864.33/8,383.86
6. Step 6: Final answer
   x = 5,987.80