Finding the Fourth Proportional to 37,783.73, 52,141.55 and 20,787.61

Step by Step Solution

1. Step 1: Write the proportion equation
   37,783.73 : 52,141.55 = 20,787.61 : x
2. Step 2: Convert to fraction form
   37,783.73/52,141.55 = 20,787.61/x
3. Step 3: Cross multiply
   37,783.73x = 52,141.55 × 20,787.61
4. Step 4: Simplify right side
   37,783.73x = 1,083,897,971.90
5. Step 5: Solve for x
   x = 1,083,897,971.90/37,783.73
6. Step 6: Final answer
   x = 28,686.90