Finding the Fourth Proportional to 23,071.50, 31,838.67 and 13,137.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,071.50 : 31,838.67 = 13,137.42 : x
2. Step 2: Convert to fraction form
   23,071.50/31,838.67 = 13,137.42/x
3. Step 3: Cross multiply
   23,071.50x = 31,838.67 × 13,137.42
4. Step 4: Simplify right side
   23,071.50x = 418,277,980.03
5. Step 5: Solve for x
   x = 418,277,980.03/23,071.50
6. Step 6: Final answer
   x = 18,129.64