Finding the Fourth Proportional to 8,994.12, 12,411.09 and 5,165.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,994.12 : 12,411.09 = 5,165.79 : x
2. Step 2: Convert to fraction form
   8,994.12/12,411.09 = 5,165.79/x
3. Step 3: Cross multiply
   8,994.12x = 12,411.09 × 5,165.79
4. Step 4: Simplify right side
   8,994.12x = 64,113,084.61
5. Step 5: Solve for x
   x = 64,113,084.61/8,994.12
6. Step 6: Final answer
   x = 7,128.33