Finding the Fourth Proportional to 31,386.49, 43,320.83 and 17,965.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,386.49 : 43,320.83 = 17,965.50 : x
2. Step 2: Convert to fraction form
   31,386.49/43,320.83 = 17,965.50/x
3. Step 3: Cross multiply
   31,386.49x = 43,320.83 × 17,965.50
4. Step 4: Simplify right side
   31,386.49x = 778,280,119.08
5. Step 5: Solve for x
   x = 778,280,119.08/31,386.49
6. Step 6: Final answer
   x = 24,796.66