Finding the Fourth Proportional to 23,085.54, 31,865.94 and 13,528.49

Step by Step Solution

1. Step 1: Write the proportion equation
   23,085.54 : 31,865.94 = 13,528.49 : x
2. Step 2: Convert to fraction form
   23,085.54/31,865.94 = 13,528.49/x
3. Step 3: Cross multiply
   23,085.54x = 31,865.94 × 13,528.49
4. Step 4: Simplify right side
   23,085.54x = 431,097,891.30
5. Step 5: Solve for x
   x = 431,097,891.30/23,085.54
6. Step 6: Final answer
   x = 18,673.94