Finding the Fourth Proportional to 8,481.27, 12,720.69 and 4,097.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,481.27 : 12,720.69 = 4,097.55 : x
2. Step 2: Convert to fraction form
   8,481.27/12,720.69 = 4,097.55/x
3. Step 3: Cross multiply
   8,481.27x = 12,720.69 × 4,097.55
4. Step 4: Simplify right side
   8,481.27x = 52,123,663.31
5. Step 5: Solve for x
   x = 52,123,663.31/8,481.27
6. Step 6: Final answer
   x = 6,145.74