Finding the Fourth Proportional to 13,726.76, 18,946.32 and 9,017.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,726.76 : 18,946.32 = 9,017.42 : x
2. Step 2: Convert to fraction form
   13,726.76/18,946.32 = 9,017.42/x
3. Step 3: Cross multiply
   13,726.76x = 18,946.32 × 9,017.42
4. Step 4: Simplify right side
   13,726.76x = 170,846,924.89
5. Step 5: Solve for x
   x = 170,846,924.89/13,726.76
6. Step 6: Final answer
   x = 12,446.27