Finding the Fourth Proportional to 21,924.56, 30,253.56 and 12,972.44

Step by Step Solution

1. Step 1: Write the proportion equation
   21,924.56 : 30,253.56 = 12,972.44 : x
2. Step 2: Convert to fraction form
   21,924.56/30,253.56 = 12,972.44/x
3. Step 3: Cross multiply
   21,924.56x = 30,253.56 × 12,972.44
4. Step 4: Simplify right side
   21,924.56x = 392,462,491.89
5. Step 5: Solve for x
   x = 392,462,491.89/21,924.56
6. Step 6: Final answer
   x = 17,900.59