Finding the Fourth Proportional to 30,584.66, 42,184.76 and 18,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,584.66 : 42,184.76 = 18,648.50 : x
2. Step 2: Convert to fraction form
   30,584.66/42,184.76 = 18,648.50/x
3. Step 3: Cross multiply
   30,584.66x = 42,184.76 × 18,648.50
4. Step 4: Simplify right side
   30,584.66x = 786,682,496.86
5. Step 5: Solve for x
   x = 786,682,496.86/30,584.66
6. Step 6: Final answer
   x = 25,721.47