Finding the Fourth Proportional to 38,111.50, 57,170.49 and 10,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,111.50 : 57,170.49 = 10,409.50 : x
2. Step 2: Convert to fraction form
   38,111.50/57,170.49 = 10,409.50/x
3. Step 3: Cross multiply
   38,111.50x = 57,170.49 × 10,409.50
4. Step 4: Simplify right side
   38,111.50x = 595,116,215.66
5. Step 5: Solve for x
   x = 595,116,215.66/38,111.50
6. Step 6: Final answer
   x = 15,615.13