Finding the Fourth Proportional to 37,781.94, 52,142.20 and 21,871.92

Step by Step Solution

1. Step 1: Write the proportion equation
   37,781.94 : 52,142.20 = 21,871.92 : x
2. Step 2: Convert to fraction form
   37,781.94/52,142.20 = 21,871.92/x
3. Step 3: Cross multiply
   37,781.94x = 52,142.20 × 21,871.92
4. Step 4: Simplify right side
   37,781.94x = 1,140,450,027.02
5. Step 5: Solve for x
   x = 1,140,450,027.02/37,781.94
6. Step 6: Final answer
   x = 30,185.06