Finding the Fourth Proportional to 37,938.74, 52,362.52 and 21,815.48

Step by Step Solution

1. Step 1: Write the proportion equation
   37,938.74 : 52,362.52 = 21,815.48 : x
2. Step 2: Convert to fraction form
   37,938.74/52,362.52 = 21,815.48/x
3. Step 3: Cross multiply
   37,938.74x = 52,362.52 × 21,815.48
4. Step 4: Simplify right side
   37,938.74x = 1,142,313,584.18
5. Step 5: Solve for x
   x = 1,142,313,584.18/37,938.74
6. Step 6: Final answer
   x = 30,109.43