Finding the Fourth Proportional to 21,768.56, 30,031.98 and 14,212.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,768.56 : 30,031.98 = 14,212.48 : x
2. Step 2: Convert to fraction form
   21,768.56/30,031.98 = 14,212.48/x
3. Step 3: Cross multiply
   21,768.56x = 30,031.98 × 14,212.48
4. Step 4: Simplify right side
   21,768.56x = 426,828,915.11
5. Step 5: Solve for x
   x = 426,828,915.11/21,768.56
6. Step 6: Final answer
   x = 19,607.59