Finding the Fourth Proportional to 13,723.98, 18,939.02 and 7,436.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,723.98 : 18,939.02 = 7,436.38 : x
2. Step 2: Convert to fraction form
   13,723.98/18,939.02 = 7,436.38/x
3. Step 3: Cross multiply
   13,723.98x = 18,939.02 × 7,436.38
4. Step 4: Simplify right side
   13,723.98x = 140,837,749.55
5. Step 5: Solve for x
   x = 140,837,749.55/13,723.98
6. Step 6: Final answer
   x = 10,262.17