Finding the Fourth Proportional to 21,768.72, 30,047.67 and 12,343.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,768.72 : 30,047.67 = 12,343.56 : x
2. Step 2: Convert to fraction form
   21,768.72/30,047.67 = 12,343.56/x
3. Step 3: Cross multiply
   21,768.72x = 30,047.67 × 12,343.56
4. Step 4: Simplify right side
   21,768.72x = 370,895,217.51
5. Step 5: Solve for x
   x = 370,895,217.51/21,768.72
6. Step 6: Final answer
   x = 17,037.99