Finding the Fourth Proportional to 31,388.34, 43,297.82 and 18,805.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,388.34 : 43,297.82 = 18,805.80 : x
2. Step 2: Convert to fraction form
   31,388.34/43,297.82 = 18,805.80/x
3. Step 3: Cross multiply
   31,388.34x = 43,297.82 × 18,805.80
4. Step 4: Simplify right side
   31,388.34x = 814,250,049.33
5. Step 5: Solve for x
   x = 814,250,049.33/31,388.34
6. Step 6: Final answer
   x = 25,941.16