Finding the Fourth Proportional to 8,493.88, 12,743.72 and 4,387

Step by Step Solution

1. Step 1: Write the proportion equation
   8,493.88 : 12,743.72 = 4,387 : x
2. Step 2: Convert to fraction form
   8,493.88/12,743.72 = 4,387/x
3. Step 3: Cross multiply
   8,493.88x = 12,743.72 × 4,387
4. Step 4: Simplify right side
   8,493.88x = 55,906,699.64
5. Step 5: Solve for x
   x = 55,906,699.64/8,493.88
6. Step 6: Final answer
   x = 6,582.00