Finding the Fourth Proportional to 31,535.15, 43,518.81 and 17,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,535.15 : 43,518.81 = 17,388.50 : x
2. Step 2: Convert to fraction form
   31,535.15/43,518.81 = 17,388.50/x
3. Step 3: Cross multiply
   31,535.15x = 43,518.81 × 17,388.50
4. Step 4: Simplify right side
   31,535.15x = 756,726,610.09
5. Step 5: Solve for x
   x = 756,726,610.09/31,535.15
6. Step 6: Final answer
   x = 23,996.29