Finding the Fourth Proportional to 37,042.78, 55,554.30 and 10,387.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,042.78 : 55,554.30 = 10,387.30 : x
2. Step 2: Convert to fraction form
   37,042.78/55,554.30 = 10,387.30/x
3. Step 3: Cross multiply
   37,042.78x = 55,554.30 × 10,387.30
4. Step 4: Simplify right side
   37,042.78x = 577,059,180.39
5. Step 5: Solve for x
   x = 577,059,180.39/37,042.78
6. Step 6: Final answer
   x = 15,578.18