Finding the Fourth Proportional to 37,879.42, 52,271.36 and 21,743

Step by Step Solution

1. Step 1: Write the proportion equation
   37,879.42 : 52,271.36 = 21,743 : x
2. Step 2: Convert to fraction form
   37,879.42/52,271.36 = 21,743/x
3. Step 3: Cross multiply
   37,879.42x = 52,271.36 × 21,743
4. Step 4: Simplify right side
   37,879.42x = 1,136,536,180.48
5. Step 5: Solve for x
   x = 1,136,536,180.48/37,879.42
6. Step 6: Final answer
   x = 30,004.05