Finding the Fourth Proportional to 22,700.69, 31,308.30 and 20,150.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,700.69 : 31,308.30 = 20,150.31 : x
2. Step 2: Convert to fraction form
   22,700.69/31,308.30 = 20,150.31/x
3. Step 3: Cross multiply
   22,700.69x = 31,308.30 × 20,150.31
4. Step 4: Simplify right side
   22,700.69x = 630,872,067.98
5. Step 5: Solve for x
   x = 630,872,067.98/22,700.69
6. Step 6: Final answer
   x = 27,790.88