Finding the Fourth Proportional to 5,411.01, 8,113.23 and 2,120.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,411.01 : 8,113.23 = 2,120.16 : x
2. Step 2: Convert to fraction form
   5,411.01/8,113.23 = 2,120.16/x
3. Step 3: Cross multiply
   5,411.01x = 8,113.23 × 2,120.16
4. Step 4: Simplify right side
   5,411.01x = 17,201,345.72
5. Step 5: Solve for x
   x = 17,201,345.72/5,411.01
6. Step 6: Final answer
   x = 3,178.95