Finding the Fourth Proportional to 37,631, 56,439.30 and 18,906.02

Step by Step Solution

1. Step 1: Write the proportion equation
   37,631 : 56,439.30 = 18,906.02 : x
2. Step 2: Convert to fraction form
   37,631/56,439.30 = 18,906.02/x
3. Step 3: Cross multiply
   37,631x = 56,439.30 × 18,906.02
4. Step 4: Simplify right side
   37,631x = 1,067,042,534.59
5. Step 5: Solve for x
   x = 1,067,042,534.59/37,631
6. Step 6: Final answer
   x = 28,355.41