Finding the Fourth Proportional to 31,710.96, 43,749.72 and 19,131.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,710.96 : 43,749.72 = 19,131.12 : x
2. Step 2: Convert to fraction form
   31,710.96/43,749.72 = 19,131.12/x
3. Step 3: Cross multiply
   31,710.96x = 43,749.72 × 19,131.12
4. Step 4: Simplify right side
   31,710.96x = 836,981,143.29
5. Step 5: Solve for x
   x = 836,981,143.29/31,710.96
6. Step 6: Final answer
   x = 26,394.07