Finding the Fourth Proportional to 12,849.65, 19,275.42 and 5,453.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,849.65 : 19,275.42 = 5,453.27 : x
2. Step 2: Convert to fraction form
   12,849.65/19,275.42 = 5,453.27/x
3. Step 3: Cross multiply
   12,849.65x = 19,275.42 × 5,453.27
4. Step 4: Simplify right side
   12,849.65x = 105,114,069.62
5. Step 5: Solve for x
   x = 105,114,069.62/12,849.65
6. Step 6: Final answer
   x = 8,180.31