Finding the Fourth Proportional to 3,699.82, 5,107.20 and 2,521.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.82 : 5,107.20 = 2,521.54 : x
2. Step 2: Convert to fraction form
   3,699.82/5,107.20 = 2,521.54/x
3. Step 3: Cross multiply
   3,699.82x = 5,107.20 × 2,521.54
4. Step 4: Simplify right side
   3,699.82x = 12,878,009.09
5. Step 5: Solve for x
   x = 12,878,009.09/3,699.82
6. Step 6: Final answer
   x = 3,480.71