Finding the Fourth Proportional to 5,411.72, 8,112.62 and 1,948.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,411.72 : 8,112.62 = 1,948.12 : x
2. Step 2: Convert to fraction form
   5,411.72/8,112.62 = 1,948.12/x
3. Step 3: Cross multiply
   5,411.72x = 8,112.62 × 1,948.12
4. Step 4: Simplify right side
   5,411.72x = 15,804,357.27
5. Step 5: Solve for x
   x = 15,804,357.27/5,411.72
6. Step 6: Final answer
   x = 2,920.39