Finding the Fourth Proportional to 37,818.73, 52,185.36 and 21,900.07

Step by Step Solution

1. Step 1: Write the proportion equation
   37,818.73 : 52,185.36 = 21,900.07 : x
2. Step 2: Convert to fraction form
   37,818.73/52,185.36 = 21,900.07/x
3. Step 3: Cross multiply
   37,818.73x = 52,185.36 × 21,900.07
4. Step 4: Simplify right side
   37,818.73x = 1,142,863,036.98
5. Step 5: Solve for x
   x = 1,142,863,036.98/37,818.73
6. Step 6: Final answer
   x = 30,219.50