Finding the Fourth Proportional to 39,868.04, 55,016.06 and 21,962.18

Step by Step Solution

1. Step 1: Write the proportion equation
   39,868.04 : 55,016.06 = 21,962.18 : x
2. Step 2: Convert to fraction form
   39,868.04/55,016.06 = 21,962.18/x
3. Step 3: Cross multiply
   39,868.04x = 55,016.06 × 21,962.18
4. Step 4: Simplify right side
   39,868.04x = 1,208,272,612.61
5. Step 5: Solve for x
   x = 1,208,272,612.61/39,868.04
6. Step 6: Final answer
   x = 30,306.80