Finding the Fourth Proportional to 12,847.65, 19,272.42 and 5,451.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,847.65 : 19,272.42 = 5,451.27 : x
2. Step 2: Convert to fraction form
   12,847.65/19,272.42 = 5,451.27/x
3. Step 3: Cross multiply
   12,847.65x = 19,272.42 × 5,451.27
4. Step 4: Simplify right side
   12,847.65x = 105,059,164.97
5. Step 5: Solve for x
   x = 105,059,164.97/12,847.65
6. Step 6: Final answer
   x = 8,177.31