Finding the Fourth Proportional to 2,643.72, 3,957.48 and 2,366.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.72 : 3,957.48 = 2,366.16 : x
2. Step 2: Convert to fraction form
   2,643.72/3,957.48 = 2,366.16/x
3. Step 3: Cross multiply
   2,643.72x = 3,957.48 × 2,366.16
4. Step 4: Simplify right side
   2,643.72x = 9,364,030.88
5. Step 5: Solve for x
   x = 9,364,030.88/2,643.72
6. Step 6: Final answer
   x = 3,541.99