Finding the Fourth Proportional to 22,093.15, 30,489.61 and 12,661.73

Step by Step Solution

1. Step 1: Write the proportion equation
   22,093.15 : 30,489.61 = 12,661.73 : x
2. Step 2: Convert to fraction form
   22,093.15/30,489.61 = 12,661.73/x
3. Step 3: Cross multiply
   22,093.15x = 30,489.61 × 12,661.73
4. Step 4: Simplify right side
   22,093.15x = 386,051,209.63
5. Step 5: Solve for x
   x = 386,051,209.63/22,093.15
6. Step 6: Final answer
   x = 17,473.80