Finding the Fourth Proportional to 10,080.81, 15,119.60 and 3,155.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,080.81 : 15,119.60 = 3,155.31 : x
2. Step 2: Convert to fraction form
   10,080.81/15,119.60 = 3,155.31/x
3. Step 3: Cross multiply
   10,080.81x = 15,119.60 × 3,155.31
4. Step 4: Simplify right side
   10,080.81x = 47,707,009.30
5. Step 5: Solve for x
   x = 47,707,009.30/10,080.81
6. Step 6: Final answer
   x = 4,732.46