Finding the Fourth Proportional to 23,132.50, 31,922.85 and 13,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,132.50 : 31,922.85 = 13,196.50 : x
2. Step 2: Convert to fraction form
   23,132.50/31,922.85 = 13,196.50/x
3. Step 3: Cross multiply
   23,132.50x = 31,922.85 × 13,196.50
4. Step 4: Simplify right side
   23,132.50x = 421,269,890.03
5. Step 5: Solve for x
   x = 421,269,890.03/23,132.50
6. Step 6: Final answer
   x = 18,211.17