Finding the Fourth Proportional to 23,091.75, 31,868.55 and 13,019.67

Step by Step Solution

1. Step 1: Write the proportion equation
   23,091.75 : 31,868.55 = 13,019.67 : x
2. Step 2: Convert to fraction form
   23,091.75/31,868.55 = 13,019.67/x
3. Step 3: Cross multiply
   23,091.75x = 31,868.55 × 13,019.67
4. Step 4: Simplify right side
   23,091.75x = 414,918,004.38
5. Step 5: Solve for x
   x = 414,918,004.38/23,091.75
6. Step 6: Final answer
   x = 17,968.24