Finding the Fourth Proportional to 12,982.31, 17,911.63 and 7,941.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,982.31 : 17,911.63 = 7,941.27 : x
2. Step 2: Convert to fraction form
   12,982.31/17,911.63 = 7,941.27/x
3. Step 3: Cross multiply
   12,982.31x = 17,911.63 × 7,941.27
4. Step 4: Simplify right side
   12,982.31x = 142,241,167.07
5. Step 5: Solve for x
   x = 142,241,167.07/12,982.31
6. Step 6: Final answer
   x = 10,956.54