Finding the Fourth Proportional to 31,535.32, 43,518.42 and 17,388.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,535.32 : 43,518.42 = 17,388.28 : x
2. Step 2: Convert to fraction form
   31,535.32/43,518.42 = 17,388.28/x
3. Step 3: Cross multiply
   31,535.32x = 43,518.42 × 17,388.28
4. Step 4: Simplify right side
   31,535.32x = 756,710,472.12
5. Step 5: Solve for x
   x = 756,710,472.12/31,535.32
6. Step 6: Final answer
   x = 23,995.65