Finding the Fourth Proportional to 22,145.76, 30,559.76 and 12,707.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,145.76 : 30,559.76 = 12,707.68 : x
2. Step 2: Convert to fraction form
   22,145.76/30,559.76 = 12,707.68/x
3. Step 3: Cross multiply
   22,145.76x = 30,559.76 × 12,707.68
4. Step 4: Simplify right side
   22,145.76x = 388,343,650.96
5. Step 5: Solve for x
   x = 388,343,650.96/22,145.76
6. Step 6: Final answer
   x = 17,535.80