Finding the Fourth Proportional to 22,049.59, 30,428.53 and 11,978.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,049.59 : 30,428.53 = 11,978.07 : x
2. Step 2: Convert to fraction form
   22,049.59/30,428.53 = 11,978.07/x
3. Step 3: Cross multiply
   22,049.59x = 30,428.53 × 11,978.07
4. Step 4: Simplify right side
   22,049.59x = 364,475,062.34
5. Step 5: Solve for x
   x = 364,475,062.34/22,049.59
6. Step 6: Final answer
   x = 16,529.79