Finding the Fourth Proportional to 30,897.32, 42,623.96 and 18,146.43

Step by Step Solution

1. Step 1: Write the proportion equation
   30,897.32 : 42,623.96 = 18,146.43 : x
2. Step 2: Convert to fraction form
   30,897.32/42,623.96 = 18,146.43/x
3. Step 3: Cross multiply
   30,897.32x = 42,623.96 × 18,146.43
4. Step 4: Simplify right side
   30,897.32x = 773,472,615.73
5. Step 5: Solve for x
   x = 773,472,615.73/30,897.32
6. Step 6: Final answer
   x = 25,033.65