Finding the Fourth Proportional to 12,434.32, 18,651.50 and 10,238.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.32 : 18,651.50 = 10,238.43 : x
2. Step 2: Convert to fraction form
   12,434.32/18,651.50 = 10,238.43/x
3. Step 3: Cross multiply
   12,434.32x = 18,651.50 × 10,238.43
4. Step 4: Simplify right side
   12,434.32x = 190,962,209.37
5. Step 5: Solve for x
   x = 190,962,209.37/12,434.32
6. Step 6: Final answer
   x = 15,357.67