Finding the Fourth Proportional to 16,478.91, 24,724.86 and 7,238.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,478.91 : 24,724.86 = 7,238.43 : x
2. Step 2: Convert to fraction form
   16,478.91/24,724.86 = 7,238.43/x
3. Step 3: Cross multiply
   16,478.91x = 24,724.86 × 7,238.43
4. Step 4: Simplify right side
   16,478.91x = 178,969,168.37
5. Step 5: Solve for x
   x = 178,969,168.37/16,478.91
6. Step 6: Final answer
   x = 10,860.50