Finding the Fourth Proportional to 30,875.46, 42,609.60 and 17,447.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,875.46 : 42,609.60 = 17,447.28 : x
2. Step 2: Convert to fraction form
   30,875.46/42,609.60 = 17,447.28/x
3. Step 3: Cross multiply
   30,875.46x = 42,609.60 × 17,447.28
4. Step 4: Simplify right side
   30,875.46x = 743,421,621.89
5. Step 5: Solve for x
   x = 743,421,621.89/30,875.46
6. Step 6: Final answer
   x = 24,078.07