Finding the Fourth Proportional to 12,687.32, 19,036.44 and 5,293.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,687.32 : 19,036.44 = 5,293.23 : x
2. Step 2: Convert to fraction form
   12,687.32/19,036.44 = 5,293.23/x
3. Step 3: Cross multiply
   12,687.32x = 19,036.44 × 5,293.23
4. Step 4: Simplify right side
   12,687.32x = 100,764,255.30
5. Step 5: Solve for x
   x = 100,764,255.30/12,687.32
6. Step 6: Final answer
   x = 7,942.13