Finding the Fourth Proportional to 42,653.82, 63,994.06 and 12,668.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,653.82 : 63,994.06 = 12,668.23 : x
2. Step 2: Convert to fraction form
   42,653.82/63,994.06 = 12,668.23/x
3. Step 3: Cross multiply
   42,653.82x = 63,994.06 × 12,668.23
4. Step 4: Simplify right side
   42,653.82x = 810,691,470.71
5. Step 5: Solve for x
   x = 810,691,470.71/42,653.82
6. Step 6: Final answer
   x = 19,006.30