Finding the Fourth Proportional to 22,020.63, 30,388.49 and 12,589.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,020.63 : 30,388.49 = 12,589.39 : x
2. Step 2: Convert to fraction form
   22,020.63/30,388.49 = 12,589.39/x
3. Step 3: Cross multiply
   22,020.63x = 30,388.49 × 12,589.39
4. Step 4: Simplify right side
   22,020.63x = 382,572,552.12
5. Step 5: Solve for x
   x = 382,572,552.12/22,020.63
6. Step 6: Final answer
   x = 17,373.37