Finding the Fourth Proportional to 13,723.83, 18,938.94 and 7,436.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,723.83 : 18,938.94 = 7,436.20 : x
2. Step 2: Convert to fraction form
   13,723.83/18,938.94 = 7,436.20/x
3. Step 3: Cross multiply
   13,723.83x = 18,938.94 × 7,436.20
4. Step 4: Simplify right side
   13,723.83x = 140,833,745.63
5. Step 5: Solve for x
   x = 140,833,745.63/13,723.83
6. Step 6: Final answer
   x = 10,261.99