Finding the Fourth Proportional to 21,752.51, 30,011.33 and 12,191

Step by Step Solution

1. Step 1: Write the proportion equation
   21,752.51 : 30,011.33 = 12,191 : x
2. Step 2: Convert to fraction form
   21,752.51/30,011.33 = 12,191/x
3. Step 3: Cross multiply
   21,752.51x = 30,011.33 × 12,191
4. Step 4: Simplify right side
   21,752.51x = 365,868,063.08
5. Step 5: Solve for x
   x = 365,868,063.08/21,752.51
6. Step 6: Final answer
   x = 16,819.58