Finding the Fourth Proportional to 12,878.82, 19,308.78 and 4,108.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,878.82 : 19,308.78 = 4,108.68 : x
2. Step 2: Convert to fraction form
   12,878.82/19,308.78 = 4,108.68/x
3. Step 3: Cross multiply
   12,878.82x = 19,308.78 × 4,108.68
4. Step 4: Simplify right side
   12,878.82x = 79,333,598.21
5. Step 5: Solve for x
   x = 79,333,598.21/12,878.82
6. Step 6: Final answer
   x = 6,160.01