Finding the Fourth Proportional to 8,406.48, 12,596.76 and 5,322

Step by Step Solution

1. Step 1: Write the proportion equation
   8,406.48 : 12,596.76 = 5,322 : x
2. Step 2: Convert to fraction form
   8,406.48/12,596.76 = 5,322/x
3. Step 3: Cross multiply
   8,406.48x = 12,596.76 × 5,322
4. Step 4: Simplify right side
   8,406.48x = 67,039,956.72
5. Step 5: Solve for x
   x = 67,039,956.72/8,406.48
6. Step 6: Final answer
   x = 7,974.80