Finding the Fourth Proportional to 3,874.64, 5,340.72 and 3,242.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,874.64 : 5,340.72 = 3,242.96 : x
2. Step 2: Convert to fraction form
   3,874.64/5,340.72 = 3,242.96/x
3. Step 3: Cross multiply
   3,874.64x = 5,340.72 × 3,242.96
4. Step 4: Simplify right side
   3,874.64x = 17,319,741.33
5. Step 5: Solve for x
   x = 17,319,741.33/3,874.64
6. Step 6: Final answer
   x = 4,470.03