Finding the Fourth Proportional to 13,724.01, 18,939.22 and 7,436.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,724.01 : 18,939.22 = 7,436.39 : x
2. Step 2: Convert to fraction form
   13,724.01/18,939.22 = 7,436.39/x
3. Step 3: Cross multiply
   13,724.01x = 18,939.22 × 7,436.39
4. Step 4: Simplify right side
   13,724.01x = 140,839,312.93
5. Step 5: Solve for x
   x = 140,839,312.93/13,724.01
6. Step 6: Final answer
   x = 10,262.26