Finding the Fourth Proportional to 3,699.88, 5,105.94 and 2,521.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.88 : 5,105.94 = 2,521.48 : x
2. Step 2: Convert to fraction form
   3,699.88/5,105.94 = 2,521.48/x
3. Step 3: Cross multiply
   3,699.88x = 5,105.94 × 2,521.48
4. Step 4: Simplify right side
   3,699.88x = 12,874,525.59
5. Step 5: Solve for x
   x = 12,874,525.59/3,699.88
6. Step 6: Final answer
   x = 3,479.71