Finding the Fourth Proportional to 13,726.05, 18,941.94 and 7,438.43

Step by Step Solution

1. Step 1: Write the proportion equation
   13,726.05 : 18,941.94 = 7,438.43 : x
2. Step 2: Convert to fraction form
   13,726.05/18,941.94 = 7,438.43/x
3. Step 3: Cross multiply
   13,726.05x = 18,941.94 × 7,438.43
4. Step 4: Simplify right side
   13,726.05x = 140,898,200.04
5. Step 5: Solve for x
   x = 140,898,200.04/13,726.05
6. Step 6: Final answer
   x = 10,265.02