Finding the Fourth Proportional to 31,530.82, 43,530.33 and 20,934.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,530.82 : 43,530.33 = 20,934.94 : x
2. Step 2: Convert to fraction form
   31,530.82/43,530.33 = 20,934.94/x
3. Step 3: Cross multiply
   31,530.82x = 43,530.33 × 20,934.94
4. Step 4: Simplify right side
   31,530.82x = 911,304,846.73
5. Step 5: Solve for x
   x = 911,304,846.73/31,530.82
6. Step 6: Final answer
   x = 28,902.03