Finding the Fourth Proportional to 12,959.31, 17,885.07 and 7,370.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.31 : 17,885.07 = 7,370.31 : x
2. Step 2: Convert to fraction form
   12,959.31/17,885.07 = 7,370.31/x
3. Step 3: Cross multiply
   12,959.31x = 17,885.07 × 7,370.31
4. Step 4: Simplify right side
   12,959.31x = 131,818,510.27
5. Step 5: Solve for x
   x = 131,818,510.27/12,959.31
6. Step 6: Final answer
   x = 10,171.72