Finding the Fourth Proportional to 49,922.69, 74,882.59 and 12,986.69

Step by Step Solution

1. Step 1: Write the proportion equation
   49,922.69 : 74,882.59 = 12,986.69 : x
2. Step 2: Convert to fraction form
   49,922.69/74,882.59 = 12,986.69/x
3. Step 3: Cross multiply
   49,922.69x = 74,882.59 × 12,986.69
4. Step 4: Simplify right side
   49,922.69x = 972,476,982.73
5. Step 5: Solve for x
   x = 972,476,982.73/49,922.69
6. Step 6: Final answer
   x = 19,479.66