Finding the Fourth Proportional to 30,895.88, 42,636.50 and 18,146.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,895.88 : 42,636.50 = 18,146.12 : x
2. Step 2: Convert to fraction form
   30,895.88/42,636.50 = 18,146.12/x
3. Step 3: Cross multiply
   30,895.88x = 42,636.50 × 18,146.12
4. Step 4: Simplify right side
   30,895.88x = 773,687,045.38
5. Step 5: Solve for x
   x = 773,687,045.38/30,895.88
6. Step 6: Final answer
   x = 25,041.75