Finding the Fourth Proportional to 22,019.69, 30,387.18 and 12,588.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,019.69 : 30,387.18 = 12,588.46 : x
2. Step 2: Convert to fraction form
   22,019.69/30,387.18 = 12,588.46/x
3. Step 3: Cross multiply
   22,019.69x = 30,387.18 × 12,588.46
4. Step 4: Simplify right side
   22,019.69x = 382,527,648.01
5. Step 5: Solve for x
   x = 382,527,648.01/22,019.69
6. Step 6: Final answer
   x = 17,372.07