Finding the Fourth Proportional to 22,049.48, 30,428.63 and 11,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,049.48 : 30,428.63 = 11,978.12 : x
2. Step 2: Convert to fraction form
   22,049.48/30,428.63 = 11,978.12/x
3. Step 3: Cross multiply
   22,049.48x = 30,428.63 × 11,978.12
4. Step 4: Simplify right side
   22,049.48x = 364,477,721.69
5. Step 5: Solve for x
   x = 364,477,721.69/22,049.48
6. Step 6: Final answer
   x = 16,529.99