Finding the Fourth Proportional to 23,085.48, 31,857.48 and 13,013.92

Step by Step Solution

1. Step 1: Write the proportion equation
   23,085.48 : 31,857.48 = 13,013.92 : x
2. Step 2: Convert to fraction form
   23,085.48/31,857.48 = 13,013.92/x
3. Step 3: Cross multiply
   23,085.48x = 31,857.48 × 13,013.92
4. Step 4: Simplify right side
   23,085.48x = 414,590,696.12
5. Step 5: Solve for x
   x = 414,590,696.12/23,085.48
6. Step 6: Final answer
   x = 17,958.94