Finding the Fourth Proportional to 20,434.32, 30,643.92 and 7,284.24

Step by Step Solution

1. Step 1: Write the proportion equation
   20,434.32 : 30,643.92 = 7,284.24 : x
2. Step 2: Convert to fraction form
   20,434.32/30,643.92 = 7,284.24/x
3. Step 3: Cross multiply
   20,434.32x = 30,643.92 × 7,284.24
4. Step 4: Simplify right side
   20,434.32x = 223,217,667.82
5. Step 5: Solve for x
   x = 223,217,667.82/20,434.32
6. Step 6: Final answer
   x = 10,923.67