Finding the Fourth Proportional to 39,867.47, 55,016.52 and 21,962.49

Step by Step Solution

1. Step 1: Write the proportion equation
   39,867.47 : 55,016.52 = 21,962.49 : x
2. Step 2: Convert to fraction form
   39,867.47/55,016.52 = 21,962.49/x
3. Step 3: Cross multiply
   39,867.47x = 55,016.52 × 21,962.49
4. Step 4: Simplify right side
   39,867.47x = 1,208,299,481.66
5. Step 5: Solve for x
   x = 1,208,299,481.66/39,867.47
6. Step 6: Final answer
   x = 30,307.91