Finding the Fourth Proportional to 30,494.88, 42,096.18 and 18,561.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,494.88 : 42,096.18 = 18,561.96 : x
2. Step 2: Convert to fraction form
   30,494.88/42,096.18 = 18,561.96/x
3. Step 3: Cross multiply
   30,494.88x = 42,096.18 × 18,561.96
4. Step 4: Simplify right side
   30,494.88x = 781,387,609.31
5. Step 5: Solve for x
   x = 781,387,609.31/30,494.88
6. Step 6: Final answer
   x = 25,623.57