Finding the Fourth Proportional to 22,573.22, 31,154.02 and 13,012.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,573.22 : 31,154.02 = 13,012.79 : x
2. Step 2: Convert to fraction form
   22,573.22/31,154.02 = 13,012.79/x
3. Step 3: Cross multiply
   22,573.22x = 31,154.02 × 13,012.79
4. Step 4: Simplify right side
   22,573.22x = 405,400,531.61
5. Step 5: Solve for x
   x = 405,400,531.61/22,573.22
6. Step 6: Final answer
   x = 17,959.36