Finding the Fourth Proportional to 20,238.12, 30,336.72 and 8,375.51

Step by Step Solution

1. Step 1: Write the proportion equation
   20,238.12 : 30,336.72 = 8,375.51 : x
2. Step 2: Convert to fraction form
   20,238.12/30,336.72 = 8,375.51/x
3. Step 3: Cross multiply
   20,238.12x = 30,336.72 × 8,375.51
4. Step 4: Simplify right side
   20,238.12x = 254,085,350.04
5. Step 5: Solve for x
   x = 254,085,350.04/20,238.12
6. Step 6: Final answer
   x = 12,554.79