Finding the Fourth Proportional to 3,994.82, 5,516.34 and 2,505.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994.82 : 5,516.34 = 2,505.30 : x
2. Step 2: Convert to fraction form
   3,994.82/5,516.34 = 2,505.30/x
3. Step 3: Cross multiply
   3,994.82x = 5,516.34 × 2,505.30
4. Step 4: Simplify right side
   3,994.82x = 13,820,086.60
5. Step 5: Solve for x
   x = 13,820,086.60/3,994.82
6. Step 6: Final answer
   x = 3,459.50