Finding the Fourth Proportional to 22,696.27, 31,321.29 and 13,270.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,696.27 : 31,321.29 = 13,270.30 : x
2. Step 2: Convert to fraction form
   22,696.27/31,321.29 = 13,270.30/x
3. Step 3: Cross multiply
   22,696.27x = 31,321.29 × 13,270.30
4. Step 4: Simplify right side
   22,696.27x = 415,642,914.69
5. Step 5: Solve for x
   x = 415,642,914.69/22,696.27
6. Step 6: Final answer
   x = 18,313.27