Finding the Fourth Proportional to 23,137.92, 31,926.72 and 13,704.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,137.92 : 31,926.72 = 13,704.96 : x
2. Step 2: Convert to fraction form
   23,137.92/31,926.72 = 13,704.96/x
3. Step 3: Cross multiply
   23,137.92x = 31,926.72 × 13,704.96
4. Step 4: Simplify right side
   23,137.92x = 437,554,420.53
5. Step 5: Solve for x
   x = 437,554,420.53/23,137.92
6. Step 6: Final answer
   x = 18,910.71