Finding the Fourth Proportional to 42,665.35, 63,993.59 and 11,498.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,665.35 : 63,993.59 = 11,498.71 : x
2. Step 2: Convert to fraction form
   42,665.35/63,993.59 = 11,498.71/x
3. Step 3: Cross multiply
   42,665.35x = 63,993.59 × 11,498.71
4. Step 4: Simplify right side
   42,665.35x = 735,843,675.78
5. Step 5: Solve for x
   x = 735,843,675.78/42,665.35
6. Step 6: Final answer
   x = 17,246.87