Finding the Fourth Proportional to 3,973.90, 5,964.72 and 2,864.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973.90 : 5,964.72 = 2,864.47 : x
2. Step 2: Convert to fraction form
   3,973.90/5,964.72 = 2,864.47/x
3. Step 3: Cross multiply
   3,973.90x = 5,964.72 × 2,864.47
4. Step 4: Simplify right side
   3,973.90x = 17,085,761.50
5. Step 5: Solve for x
   x = 17,085,761.50/3,973.90
6. Step 6: Final answer
   x = 4,299.49