Finding the Fourth Proportional to 31,808.72, 43,893 and 18,377.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,808.72 : 43,893 = 18,377.36 : x
2. Step 2: Convert to fraction form
   31,808.72/43,893 = 18,377.36/x
3. Step 3: Cross multiply
   31,808.72x = 43,893 × 18,377.36
4. Step 4: Simplify right side
   31,808.72x = 806,637,462.48
5. Step 5: Solve for x
   x = 806,637,462.48/31,808.72
6. Step 6: Final answer
   x = 25,359.00