Finding the Fourth Proportional to 10,238.46, 15,336.09 and 10,121.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.46 : 15,336.09 = 10,121.82 : x
2. Step 2: Convert to fraction form
   10,238.46/15,336.09 = 10,121.82/x
3. Step 3: Cross multiply
   10,238.46x = 15,336.09 × 10,121.82
4. Step 4: Simplify right side
   10,238.46x = 155,229,142.48
5. Step 5: Solve for x
   x = 155,229,142.48/10,238.46
6. Step 6: Final answer
   x = 15,161.38