Finding the Fourth Proportional to 39,867.00, 55,016.20 and 21,961.59

Step by Step Solution

1. Step 1: Write the proportion equation
   39,867.00 : 55,016.20 = 21,961.59 : x
2. Step 2: Convert to fraction form
   39,867.00/55,016.20 = 21,961.59/x
3. Step 3: Cross multiply
   39,867.00x = 55,016.20 × 21,961.59
4. Step 4: Simplify right side
   39,867.00x = 1,208,242,897.77
5. Step 5: Solve for x
   x = 1,208,242,897.77/39,867.00
6. Step 6: Final answer
   x = 30,306.85