Finding the Fourth Proportional to 22,300.14, 30,776.85 and 12,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,300.14 : 30,776.85 = 12,868.50 : x
2. Step 2: Convert to fraction form
   22,300.14/30,776.85 = 12,868.50/x
3. Step 3: Cross multiply
   22,300.14x = 30,776.85 × 12,868.50
4. Step 4: Simplify right side
   22,300.14x = 396,051,894.23
5. Step 5: Solve for x
   x = 396,051,894.23/22,300.14
6. Step 6: Final answer
   x = 17,760.06