Finding the Fourth Proportional to 23,087.91, 31,857.27 and 13,653.03

Step by Step Solution

1. Step 1: Write the proportion equation
   23,087.91 : 31,857.27 = 13,653.03 : x
2. Step 2: Convert to fraction form
   23,087.91/31,857.27 = 13,653.03/x
3. Step 3: Cross multiply
   23,087.91x = 31,857.27 × 13,653.03
4. Step 4: Simplify right side
   23,087.91x = 434,948,263.03
5. Step 5: Solve for x
   x = 434,948,263.03/23,087.91
6. Step 6: Final answer
   x = 18,838.79