Finding the Fourth Proportional to 12,994.05, 17,929.80 and 7,328.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,994.05 : 17,929.80 = 7,328.55 : x
2. Step 2: Convert to fraction form
   12,994.05/17,929.80 = 7,328.55/x
3. Step 3: Cross multiply
   12,994.05x = 17,929.80 × 7,328.55
4. Step 4: Simplify right side
   12,994.05x = 131,399,435.79
5. Step 5: Solve for x
   x = 131,399,435.79/12,994.05
6. Step 6: Final answer
   x = 10,112.28