Finding the Fourth Proportional to 8,994.32, 12,406.55 and 5,806.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,994.32 : 12,406.55 = 5,806.39 : x
2. Step 2: Convert to fraction form
   8,994.32/12,406.55 = 5,806.39/x
3. Step 3: Cross multiply
   8,994.32x = 12,406.55 × 5,806.39
4. Step 4: Simplify right side
   8,994.32x = 72,037,267.85
5. Step 5: Solve for x
   x = 72,037,267.85/8,994.32
6. Step 6: Final answer
   x = 8,009.20