Finding the Fourth Proportional to 40,350.47, 60,535.43 and 12,648.47

Step by Step Solution

1. Step 1: Write the proportion equation
   40,350.47 : 60,535.43 = 12,648.47 : x
2. Step 2: Convert to fraction form
   40,350.47/60,535.43 = 12,648.47/x
3. Step 3: Cross multiply
   40,350.47x = 60,535.43 × 12,648.47
4. Step 4: Simplify right side
   40,350.47x = 765,680,204.37
5. Step 5: Solve for x
   x = 765,680,204.37/40,350.47
6. Step 6: Final answer
   x = 18,975.75