Finding the Fourth Proportional to 8,603.31, 11,871.72 and 4,826.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,603.31 : 11,871.72 = 4,826.61 : x
2. Step 2: Convert to fraction form
   8,603.31/11,871.72 = 4,826.61/x
3. Step 3: Cross multiply
   8,603.31x = 11,871.72 × 4,826.61
4. Step 4: Simplify right side
   8,603.31x = 57,300,162.47
5. Step 5: Solve for x
   x = 57,300,162.47/8,603.31
6. Step 6: Final answer
   x = 6,660.25