Finding the Fourth Proportional to 3,878.07, 5,826.98 and 3,654.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.07 : 5,826.98 = 3,654.01 : x
2. Step 2: Convert to fraction form
   3,878.07/5,826.98 = 3,654.01/x
3. Step 3: Cross multiply
   3,878.07x = 5,826.98 × 3,654.01
4. Step 4: Simplify right side
   3,878.07x = 21,291,843.19
5. Step 5: Solve for x
   x = 21,291,843.19/3,878.07
6. Step 6: Final answer
   x = 5,490.32