Finding the Fourth Proportional to 31,382.06, 43,315 and 17,960.97

Step by Step Solution

1. Step 1: Write the proportion equation
   31,382.06 : 43,315 = 17,960.97 : x
2. Step 2: Convert to fraction form
   31,382.06/43,315 = 17,960.97/x
3. Step 3: Cross multiply
   31,382.06x = 43,315 × 17,960.97
4. Step 4: Simplify right side
   31,382.06x = 777,979,415.55
5. Step 5: Solve for x
   x = 777,979,415.55/31,382.06
6. Step 6: Final answer
   x = 24,790.58