Finding the Fourth Proportional to 18,994.30, 28,494.79 and 7,306.61

Step by Step Solution

1. Step 1: Write the proportion equation
   18,994.30 : 28,494.79 = 7,306.61 : x
2. Step 2: Convert to fraction form
   18,994.30/28,494.79 = 7,306.61/x
3. Step 3: Cross multiply
   18,994.30x = 28,494.79 × 7,306.61
4. Step 4: Simplify right side
   18,994.30x = 208,200,156.82
5. Step 5: Solve for x
   x = 208,200,156.82/18,994.30
6. Step 6: Final answer
   x = 10,961.19