Finding the Fourth Proportional to 13,726.90, 18,942.96 and 7,758.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,726.90 : 18,942.96 = 7,758.82 : x
2. Step 2: Convert to fraction form
   13,726.90/18,942.96 = 7,758.82/x
3. Step 3: Cross multiply
   13,726.90x = 18,942.96 × 7,758.82
4. Step 4: Simplify right side
   13,726.90x = 146,975,016.91
5. Step 5: Solve for x
   x = 146,975,016.91/13,726.90
6. Step 6: Final answer
   x = 10,707.08