Finding the Fourth Proportional to 5,406.25, 8,106.72 and 2,118.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,406.25 : 8,106.72 = 2,118.46 : x
2. Step 2: Convert to fraction form
   5,406.25/8,106.72 = 2,118.46/x
3. Step 3: Cross multiply
   5,406.25x = 8,106.72 × 2,118.46
4. Step 4: Simplify right side
   5,406.25x = 17,173,762.05
5. Step 5: Solve for x
   x = 17,173,762.05/5,406.25
6. Step 6: Final answer
   x = 3,176.65