Finding the Fourth Proportional to 22,696.18, 31,321.61 and 13,738.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,696.18 : 31,321.61 = 13,738.61 : x
2. Step 2: Convert to fraction form
   22,696.18/31,321.61 = 13,738.61/x
3. Step 3: Cross multiply
   22,696.18x = 31,321.61 × 13,738.61
4. Step 4: Simplify right side
   22,696.18x = 430,315,418.71
5. Step 5: Solve for x
   x = 430,315,418.71/22,696.18
6. Step 6: Final answer
   x = 18,959.82