Finding the Fourth Proportional to 8,408.20, 12,606.06 and 5,803.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,408.20 : 12,606.06 = 5,803.72 : x
2. Step 2: Convert to fraction form
   8,408.20/12,606.06 = 5,803.72/x
3. Step 3: Cross multiply
   8,408.20x = 12,606.06 × 5,803.72
4. Step 4: Simplify right side
   8,408.20x = 73,162,042.54
5. Step 5: Solve for x
   x = 73,162,042.54/8,408.20
6. Step 6: Final answer
   x = 8,701.27