Finding the Fourth Proportional to 38,408.50, 53,003.76 and 20,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,408.50 : 53,003.76 = 20,744.50 : x
2. Step 2: Convert to fraction form
   38,408.50/53,003.76 = 20,744.50/x
3. Step 3: Cross multiply
   38,408.50x = 53,003.76 × 20,744.50
4. Step 4: Simplify right side
   38,408.50x = 1,099,536,499.32
5. Step 5: Solve for x
   x = 1,099,536,499.32/38,408.50
6. Step 6: Final answer
   x = 28,627.43