Finding the Fourth Proportional to 37,821.87, 52,186.28 and 21,905.37

Step by Step Solution

1. Step 1: Write the proportion equation
   37,821.87 : 52,186.28 = 21,905.37 : x
2. Step 2: Convert to fraction form
   37,821.87/52,186.28 = 21,905.37/x
3. Step 3: Cross multiply
   37,821.87x = 52,186.28 × 21,905.37
4. Step 4: Simplify right side
   37,821.87x = 1,143,159,662.80
5. Step 5: Solve for x
   x = 1,143,159,662.80/37,821.87
6. Step 6: Final answer
   x = 30,224.83