Finding the Fourth Proportional to 2,150.01, 2,978.21 and 2,106.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.01 : 2,978.21 = 2,106.27 : x
2. Step 2: Convert to fraction form
   2,150.01/2,978.21 = 2,106.27/x
3. Step 3: Cross multiply
   2,150.01x = 2,978.21 × 2,106.27
4. Step 4: Simplify right side
   2,150.01x = 6,272,919.64
5. Step 5: Solve for x
   x = 6,272,919.64/2,150.01
6. Step 6: Final answer
   x = 2,917.62