Finding the Fourth Proportional to 22,247.68, 30,705.25 and 12,687.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,247.68 : 30,705.25 = 12,687.59 : x
2. Step 2: Convert to fraction form
   22,247.68/30,705.25 = 12,687.59/x
3. Step 3: Cross multiply
   22,247.68x = 30,705.25 × 12,687.59
4. Step 4: Simplify right side
   22,247.68x = 389,575,405.88
5. Step 5: Solve for x
   x = 389,575,405.88/22,247.68
6. Step 6: Final answer
   x = 17,510.83