Finding the Fourth Proportional to 42,466.92, 63,700.52 and 12,885

Step by Step Solution

1. Step 1: Write the proportion equation
   42,466.92 : 63,700.52 = 12,885 : x
2. Step 2: Convert to fraction form
   42,466.92/63,700.52 = 12,885/x
3. Step 3: Cross multiply
   42,466.92x = 63,700.52 × 12,885
4. Step 4: Simplify right side
   42,466.92x = 820,781,135.78
5. Step 5: Solve for x
   x = 820,781,135.78/42,466.92
6. Step 6: Final answer
   x = 19,327.54