Finding the Fourth Proportional to 22,300.75, 30,775.01 and 12,869.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,300.75 : 30,775.01 = 12,869.31 : x
2. Step 2: Convert to fraction form
   22,300.75/30,775.01 = 12,869.31/x
3. Step 3: Cross multiply
   22,300.75x = 30,775.01 × 12,869.31
4. Step 4: Simplify right side
   22,300.75x = 396,053,195.00
5. Step 5: Solve for x
   x = 396,053,195.00/22,300.75
6. Step 6: Final answer
   x = 17,759.63