Finding the Fourth Proportional to 9,411.53, 12,994.04 and 6,426.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.53 : 12,994.04 = 6,426.28 : x
2. Step 2: Convert to fraction form
   9,411.53/12,994.04 = 6,426.28/x
3. Step 3: Cross multiply
   9,411.53x = 12,994.04 × 6,426.28
4. Step 4: Simplify right side
   9,411.53x = 83,503,339.37
5. Step 5: Solve for x
   x = 83,503,339.37/9,411.53
6. Step 6: Final answer
   x = 8,872.45