Finding the Fourth Proportional to 3,709.30, 5,118.60 and 2,116.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.30 : 5,118.60 = 2,116.03 : x
2. Step 2: Convert to fraction form
   3,709.30/5,118.60 = 2,116.03/x
3. Step 3: Cross multiply
   3,709.30x = 5,118.60 × 2,116.03
4. Step 4: Simplify right side
   3,709.30x = 10,831,106.30
5. Step 5: Solve for x
   x = 10,831,106.30/3,709.30
6. Step 6: Final answer
   x = 2,919.99