Finding the Fourth Proportional to 21,749.57, 30,016.52 and 12,191.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,749.57 : 30,016.52 = 12,191.08 : x
2. Step 2: Convert to fraction form
   21,749.57/30,016.52 = 12,191.08/x
3. Step 3: Cross multiply
   21,749.57x = 30,016.52 × 12,191.08
4. Step 4: Simplify right side
   21,749.57x = 365,933,810.73
5. Step 5: Solve for x
   x = 365,933,810.73/21,749.57
6. Step 6: Final answer
   x = 16,824.87