Finding the Fourth Proportional to 11,454.80, 17,178.06 and 8,994.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,454.80 : 17,178.06 = 8,994.42 : x
2. Step 2: Convert to fraction form
   11,454.80/17,178.06 = 8,994.42/x
3. Step 3: Cross multiply
   11,454.80x = 17,178.06 × 8,994.42
4. Step 4: Simplify right side
   11,454.80x = 154,506,686.43
5. Step 5: Solve for x
   x = 154,506,686.43/11,454.80
6. Step 6: Final answer
   x = 13,488.39