Finding the Fourth Proportional to 23,162.63, 31,961.87 and 13,091.06

Step by Step Solution

1. Step 1: Write the proportion equation
   23,162.63 : 31,961.87 = 13,091.06 : x
2. Step 2: Convert to fraction form
   23,162.63/31,961.87 = 13,091.06/x
3. Step 3: Cross multiply
   23,162.63x = 31,961.87 × 13,091.06
4. Step 4: Simplify right side
   23,162.63x = 418,414,757.88
5. Step 5: Solve for x
   x = 418,414,757.88/23,162.63
6. Step 6: Final answer
   x = 18,064.22