Finding the Fourth Proportional to 13,112.25, 19,671.71 and 3,878.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.25 : 19,671.71 = 3,878.25 : x
2. Step 2: Convert to fraction form
   13,112.25/19,671.71 = 3,878.25/x
3. Step 3: Cross multiply
   13,112.25x = 19,671.71 × 3,878.25
4. Step 4: Simplify right side
   13,112.25x = 76,291,789.92
5. Step 5: Solve for x
   x = 76,291,789.92/13,112.25
6. Step 6: Final answer
   x = 5,818.36