Finding the Fourth Proportional to 22,148.79, 30,564.89 and 12,077.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,148.79 : 30,564.89 = 12,077.30 : x
2. Step 2: Convert to fraction form
   22,148.79/30,564.89 = 12,077.30/x
3. Step 3: Cross multiply
   22,148.79x = 30,564.89 × 12,077.30
4. Step 4: Simplify right side
   22,148.79x = 369,141,132.79
5. Step 5: Solve for x
   x = 369,141,132.79/22,148.79
6. Step 6: Final answer
   x = 16,666.42