Finding the Fourth Proportional to 25,185.87, 37,783.13 and 10,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,185.87 : 37,783.13 = 10,386.72 : x
2. Step 2: Convert to fraction form
   25,185.87/37,783.13 = 10,386.72/x
3. Step 3: Cross multiply
   25,185.87x = 37,783.13 × 10,386.72
4. Step 4: Simplify right side
   25,185.87x = 392,442,740.10
5. Step 5: Solve for x
   x = 392,442,740.10/25,185.87
6. Step 6: Final answer
   x = 15,581.86