Finding the Fourth Proportional to 13,723.72, 18,938.75 and 7,436.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,723.72 : 18,938.75 = 7,436.10 : x
2. Step 2: Convert to fraction form
   13,723.72/18,938.75 = 7,436.10/x
3. Step 3: Cross multiply
   13,723.72x = 18,938.75 × 7,436.10
4. Step 4: Simplify right side
   13,723.72x = 140,830,391.53
5. Step 5: Solve for x
   x = 140,830,391.53/13,723.72
6. Step 6: Final answer
   x = 10,261.82