Finding the Fourth Proportional to 22,556.37, 31,128.53 and 12,995.51

Step by Step Solution

1. Step 1: Write the proportion equation
   22,556.37 : 31,128.53 = 12,995.51 : x
2. Step 2: Convert to fraction form
   22,556.37/31,128.53 = 12,995.51/x
3. Step 3: Cross multiply
   22,556.37x = 31,128.53 × 12,995.51
4. Step 4: Simplify right side
   22,556.37x = 404,531,233.21
5. Step 5: Solve for x
   x = 404,531,233.21/22,556.37
6. Step 6: Final answer
   x = 17,934.23