Finding the Fourth Proportional to 22,878.62, 31,573.89 and 12,807.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,878.62 : 31,573.89 = 12,807.69 : x
2. Step 2: Convert to fraction form
   22,878.62/31,573.89 = 12,807.69/x
3. Step 3: Cross multiply
   22,878.62x = 31,573.89 × 12,807.69
4. Step 4: Simplify right side
   22,878.62x = 404,388,595.21
5. Step 5: Solve for x
   x = 404,388,595.21/22,878.62
6. Step 6: Final answer
   x = 17,675.40