Finding the Fourth Proportional to 10,509.38, 15,761.37 and 3,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,509.38 : 15,761.37 = 3,112.10 : x
2. Step 2: Convert to fraction form
   10,509.38/15,761.37 = 3,112.10/x
3. Step 3: Cross multiply
   10,509.38x = 15,761.37 × 3,112.10
4. Step 4: Simplify right side
   10,509.38x = 49,051,035.83
5. Step 5: Solve for x
   x = 49,051,035.83/10,509.38
6. Step 6: Final answer
   x = 4,667.36