Finding the Fourth Proportional to 3,920.51, 5,410.50 and 2,152.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.51 : 5,410.50 = 2,152.10 : x
2. Step 2: Convert to fraction form
   3,920.51/5,410.50 = 2,152.10/x
3. Step 3: Cross multiply
   3,920.51x = 5,410.50 × 2,152.10
4. Step 4: Simplify right side
   3,920.51x = 11,643,937.05
5. Step 5: Solve for x
   x = 11,643,937.05/3,920.51
6. Step 6: Final answer
   x = 2,970.01