Finding the Fourth Proportional to 23,091.67, 31,865.29 and 13,020.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,091.67 : 31,865.29 = 13,020.13 : x
2. Step 2: Convert to fraction form
   23,091.67/31,865.29 = 13,020.13/x
3. Step 3: Cross multiply
   23,091.67x = 31,865.29 × 13,020.13
4. Step 4: Simplify right side
   23,091.67x = 414,890,218.29
5. Step 5: Solve for x
   x = 414,890,218.29/23,091.67
6. Step 6: Final answer
   x = 17,967.09