Finding the Fourth Proportional to 12,240.72, 18,306 and 10,932.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,240.72 : 18,306 = 10,932.48 : x
2. Step 2: Convert to fraction form
   12,240.72/18,306 = 10,932.48/x
3. Step 3: Cross multiply
   12,240.72x = 18,306 × 10,932.48
4. Step 4: Simplify right side
   12,240.72x = 200,129,978.88
5. Step 5: Solve for x
   x = 200,129,978.88/12,240.72
6. Step 6: Final answer
   x = 16,349.53