Finding the Fourth Proportional to 42,298.38, 63,448.38 and 12,717.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,298.38 : 63,448.38 = 12,717.18 : x
2. Step 2: Convert to fraction form
   42,298.38/63,448.38 = 12,717.18/x
3. Step 3: Cross multiply
   42,298.38x = 63,448.38 × 12,717.18
4. Step 4: Simplify right side
   42,298.38x = 806,884,469.17
5. Step 5: Solve for x
   x = 806,884,469.17/42,298.38
6. Step 6: Final answer
   x = 19,076.01