Finding the Fourth Proportional to 9,738.72, 13,439.52 and 8,994.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,738.72 : 13,439.52 = 8,994.60 : x
2. Step 2: Convert to fraction form
   9,738.72/13,439.52 = 8,994.60/x
3. Step 3: Cross multiply
   9,738.72x = 13,439.52 × 8,994.60
4. Step 4: Simplify right side
   9,738.72x = 120,883,106.59
5. Step 5: Solve for x
   x = 120,883,106.59/9,738.72
6. Step 6: Final answer
   x = 12,412.63