Finding the Fourth Proportional to 3,904.50, 5,388.33 and 2,136.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,904.50 : 5,388.33 = 2,136.10 : x
2. Step 2: Convert to fraction form
   3,904.50/5,388.33 = 2,136.10/x
3. Step 3: Cross multiply
   3,904.50x = 5,388.33 × 2,136.10
4. Step 4: Simplify right side
   3,904.50x = 11,510,023.79
5. Step 5: Solve for x
   x = 11,510,023.79/3,904.50
6. Step 6: Final answer
   x = 2,947.89