Finding the Fourth Proportional to 23,147.48, 31,941.90 and 13,072.76

Step by Step Solution

1. Step 1: Write the proportion equation
   23,147.48 : 31,941.90 = 13,072.76 : x
2. Step 2: Convert to fraction form
   23,147.48/31,941.90 = 13,072.76/x
3. Step 3: Cross multiply
   23,147.48x = 31,941.90 × 13,072.76
4. Step 4: Simplify right side
   23,147.48x = 417,568,792.64
5. Step 5: Solve for x
   x = 417,568,792.64/23,147.48
6. Step 6: Final answer
   x = 18,039.49