Finding the Fourth Proportional to 42,538.47, 63,809.46 and 12,552.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,538.47 : 63,809.46 = 12,552.71 : x
2. Step 2: Convert to fraction form
   42,538.47/63,809.46 = 12,552.71/x
3. Step 3: Cross multiply
   42,538.47x = 63,809.46 × 12,552.71
4. Step 4: Simplify right side
   42,538.47x = 800,981,518.49
5. Step 5: Solve for x
   x = 800,981,518.49/42,538.47
6. Step 6: Final answer
   x = 18,829.58