Finding the Fourth Proportional to 20,109.45, 30,162.69 and 8,260.01

Step by Step Solution

1. Step 1: Write the proportion equation
   20,109.45 : 30,162.69 = 8,260.01 : x
2. Step 2: Convert to fraction form
   20,109.45/30,162.69 = 8,260.01/x
3. Step 3: Cross multiply
   20,109.45x = 30,162.69 × 8,260.01
4. Step 4: Simplify right side
   20,109.45x = 249,144,121.03
5. Step 5: Solve for x
   x = 249,144,121.03/20,109.45
6. Step 6: Final answer
   x = 12,389.41