Finding the Fourth Proportional to 47,479.18, 71,222.82 and 12,418.78

Step by Step Solution

1. Step 1: Write the proportion equation
   47,479.18 : 71,222.82 = 12,418.78 : x
2. Step 2: Convert to fraction form
   47,479.18/71,222.82 = 12,418.78/x
3. Step 3: Cross multiply
   47,479.18x = 71,222.82 × 12,418.78
4. Step 4: Simplify right side
   47,479.18x = 884,500,532.56
5. Step 5: Solve for x
   x = 884,500,532.56/47,479.18
6. Step 6: Final answer
   x = 18,629.23