Finding the Fourth Proportional to 22,326.05, 30,809.05 and 13,378.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,326.05 : 30,809.05 = 13,378.50 : x
2. Step 2: Convert to fraction form
   22,326.05/30,809.05 = 13,378.50/x
3. Step 3: Cross multiply
   22,326.05x = 30,809.05 × 13,378.50
4. Step 4: Simplify right side
   22,326.05x = 412,178,841.98
5. Step 5: Solve for x
   x = 412,178,841.98/22,326.05
6. Step 6: Final answer
   x = 18,461.79