Finding the Fourth Proportional to 21,749.32, 30,016.17 and 12,190.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,749.32 : 30,016.17 = 12,190.84 : x
2. Step 2: Convert to fraction form
   21,749.32/30,016.17 = 12,190.84/x
3. Step 3: Cross multiply
   21,749.32x = 30,016.17 × 12,190.84
4. Step 4: Simplify right side
   21,749.32x = 365,922,250.84
5. Step 5: Solve for x
   x = 365,922,250.84/21,749.32
6. Step 6: Final answer
   x = 16,824.54