Finding the Fourth Proportional to 13,255.48, 19,878.35 and 3,893.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.48 : 19,878.35 = 3,893.09 : x
2. Step 2: Convert to fraction form
   13,255.48/19,878.35 = 3,893.09/x
3. Step 3: Cross multiply
   13,255.48x = 19,878.35 × 3,893.09
4. Step 4: Simplify right side
   13,255.48x = 77,388,235.83
5. Step 5: Solve for x
   x = 77,388,235.83/13,255.48
6. Step 6: Final answer
   x = 5,838.21