Finding the Fourth Proportional to 42,933.72, 64,408.84 and 13,350.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,933.72 : 64,408.84 = 13,350.52 : x
2. Step 2: Convert to fraction form
   42,933.72/64,408.84 = 13,350.52/x
3. Step 3: Cross multiply
   42,933.72x = 64,408.84 × 13,350.52
4. Step 4: Simplify right side
   42,933.72x = 859,891,506.60
5. Step 5: Solve for x
   x = 859,891,506.60/42,933.72
6. Step 6: Final answer
   x = 20,028.35