Finding the Fourth Proportional to 31,535, 43,518.60 and 17,388.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,535 : 43,518.60 = 17,388.35 : x
2. Step 2: Convert to fraction form
   31,535/43,518.60 = 17,388.35/x
3. Step 3: Cross multiply
   31,535x = 43,518.60 × 17,388.35
4. Step 4: Simplify right side
   31,535x = 756,716,648.31
5. Step 5: Solve for x
   x = 756,716,648.31/31,535
6. Step 6: Final answer
   x = 23,996.09