Finding the Fourth Proportional to 3,964.51, 5,470.86 and 2,196.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.51 : 5,470.86 = 2,196.01 : x
2. Step 2: Convert to fraction form
   3,964.51/5,470.86 = 2,196.01/x
3. Step 3: Cross multiply
   3,964.51x = 5,470.86 × 2,196.01
4. Step 4: Simplify right side
   3,964.51x = 12,014,063.27
5. Step 5: Solve for x
   x = 12,014,063.27/3,964.51
6. Step 6: Final answer
   x = 3,030.40