Finding the Fourth Proportional to 30,589.48, 42,210.72 and 18,650.45

Step by Step Solution

1. Step 1: Write the proportion equation
   30,589.48 : 42,210.72 = 18,650.45 : x
2. Step 2: Convert to fraction form
   30,589.48/42,210.72 = 18,650.45/x
3. Step 3: Cross multiply
   30,589.48x = 42,210.72 × 18,650.45
4. Step 4: Simplify right side
   30,589.48x = 787,249,028.35
5. Step 5: Solve for x
   x = 787,249,028.35/30,589.48
6. Step 6: Final answer
   x = 25,735.94