Finding the Fourth Proportional to 31,610.91, 43,631.74 and 19,667.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,610.91 : 43,631.74 = 19,667.12 : x
2. Step 2: Convert to fraction form
   31,610.91/43,631.74 = 19,667.12/x
3. Step 3: Cross multiply
   31,610.91x = 43,631.74 × 19,667.12
4. Step 4: Simplify right side
   31,610.91x = 858,110,666.39
5. Step 5: Solve for x
   x = 858,110,666.39/31,610.91
6. Step 6: Final answer
   x = 27,146.03