Finding the Fourth Proportional to 39,868, 55,017.58 and 21,962.59

Step by Step Solution

1. Step 1: Write the proportion equation
   39,868 : 55,017.58 = 21,962.59 : x
2. Step 2: Convert to fraction form
   39,868/55,017.58 = 21,962.59/x
3. Step 3: Cross multiply
   39,868x = 55,017.58 × 21,962.59
4. Step 4: Simplify right side
   39,868x = 1,208,328,552.33
5. Step 5: Solve for x
   x = 1,208,328,552.33/39,868
6. Step 6: Final answer
   x = 30,308.23