Finding the Fourth Proportional to 13,118.25, 19,680.71 and 3,884.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.25 : 19,680.71 = 3,884.25 : x
2. Step 2: Convert to fraction form
   13,118.25/19,680.71 = 3,884.25/x
3. Step 3: Cross multiply
   13,118.25x = 19,680.71 × 3,884.25
4. Step 4: Simplify right side
   13,118.25x = 76,444,778.40
5. Step 5: Solve for x
   x = 76,444,778.40/13,118.25
6. Step 6: Final answer
   x = 5,827.36