Finding the Fourth Proportional to 42,367.94, 63,552.34 and 12,786.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,367.94 : 63,552.34 = 12,786.02 : x
2. Step 2: Convert to fraction form
   42,367.94/63,552.34 = 12,786.02/x
3. Step 3: Cross multiply
   42,367.94x = 63,552.34 × 12,786.02
4. Step 4: Simplify right side
   42,367.94x = 812,581,490.29
5. Step 5: Solve for x
   x = 812,581,490.29/42,367.94
6. Step 6: Final answer
   x = 19,179.16