Finding the Fourth Proportional to 22,049.48, 30,428.82 and 12,621.08

Step by Step Solution

1. Step 1: Write the proportion equation
   22,049.48 : 30,428.82 = 12,621.08 : x
2. Step 2: Convert to fraction form
   22,049.48/30,428.82 = 12,621.08/x
3. Step 3: Cross multiply
   22,049.48x = 30,428.82 × 12,621.08
4. Step 4: Simplify right side
   22,049.48x = 384,044,571.53
5. Step 5: Solve for x
   x = 384,044,571.53/22,049.48
6. Step 6: Final answer
   x = 17,417.40