Finding the Fourth Proportional to 31,768.52, 43,830.42 and 18,338

Step by Step Solution

1. Step 1: Write the proportion equation
   31,768.52 : 43,830.42 = 18,338 : x
2. Step 2: Convert to fraction form
   31,768.52/43,830.42 = 18,338/x
3. Step 3: Cross multiply
   31,768.52x = 43,830.42 × 18,338
4. Step 4: Simplify right side
   31,768.52x = 803,762,241.96
5. Step 5: Solve for x
   x = 803,762,241.96/31,768.52
6. Step 6: Final answer
   x = 25,300.59