Finding the Fourth Proportional to 13,723.35, 18,938.24 and 7,435.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,723.35 : 18,938.24 = 7,435.72 : x
2. Step 2: Convert to fraction form
   13,723.35/18,938.24 = 7,435.72/x
3. Step 3: Cross multiply
   13,723.35x = 18,938.24 × 7,435.72
4. Step 4: Simplify right side
   13,723.35x = 140,819,449.93
5. Step 5: Solve for x
   x = 140,819,449.93/13,723.35
6. Step 6: Final answer
   x = 10,261.30