Finding the Fourth Proportional to 22,300.69, 30,770.13 and 12,863.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,300.69 : 30,770.13 = 12,863.78 : x
2. Step 2: Convert to fraction form
   22,300.69/30,770.13 = 12,863.78/x
3. Step 3: Cross multiply
   22,300.69x = 30,770.13 × 12,863.78
4. Step 4: Simplify right side
   22,300.69x = 395,820,182.89
5. Step 5: Solve for x
   x = 395,820,182.89/22,300.69
6. Step 6: Final answer
   x = 17,749.23