Finding the Fourth Proportional to 39,017.59, 53,843.90 and 21,112.27

Step by Step Solution

1. Step 1: Write the proportion equation
   39,017.59 : 53,843.90 = 21,112.27 : x
2. Step 2: Convert to fraction form
   39,017.59/53,843.90 = 21,112.27/x
3. Step 3: Cross multiply
   39,017.59x = 53,843.90 × 21,112.27
4. Step 4: Simplify right side
   39,017.59x = 1,136,766,714.48
5. Step 5: Solve for x
   x = 1,136,766,714.48/39,017.59
6. Step 6: Final answer
   x = 29,134.73