Finding the Fourth Proportional to 28,355.43, 42,512.27 and 9,630.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,355.43 : 42,512.27 = 9,630.42 : x
2. Step 2: Convert to fraction form
   28,355.43/42,512.27 = 9,630.42/x
3. Step 3: Cross multiply
   28,355.43x = 42,512.27 × 9,630.42
4. Step 4: Simplify right side
   28,355.43x = 409,410,967.10
5. Step 5: Solve for x
   x = 409,410,967.10/28,355.43
6. Step 6: Final answer
   x = 14,438.54