Finding the Fourth Proportional to 8,648.31, 11,934.84 and 5,111.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,648.31 : 11,934.84 = 5,111.54 : x
2. Step 2: Convert to fraction form
   8,648.31/11,934.84 = 5,111.54/x
3. Step 3: Cross multiply
   8,648.31x = 11,934.84 × 5,111.54
4. Step 4: Simplify right side
   8,648.31x = 61,005,412.05
5. Step 5: Solve for x
   x = 61,005,412.05/8,648.31
6. Step 6: Final answer
   x = 7,054.03