Finding the Fourth Proportional to 13,308.30, 19,923.55 and 8,078.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.30 : 19,923.55 = 8,078.94 : x
2. Step 2: Convert to fraction form
   13,308.30/19,923.55 = 8,078.94/x
3. Step 3: Cross multiply
   13,308.30x = 19,923.55 × 8,078.94
4. Step 4: Simplify right side
   13,308.30x = 160,961,144.84
5. Step 5: Solve for x
   x = 160,961,144.84/13,308.30
6. Step 6: Final answer
   x = 12,094.79