Finding the Fourth Proportional to 3,396.72, 4,686.72 and 2,154

Step by Step Solution

1. Step 1: Write the proportion equation
   3,396.72 : 4,686.72 = 2,154 : x
2. Step 2: Convert to fraction form
   3,396.72/4,686.72 = 2,154/x
3. Step 3: Cross multiply
   3,396.72x = 4,686.72 × 2,154
4. Step 4: Simplify right side
   3,396.72x = 10,095,194.88
5. Step 5: Solve for x
   x = 10,095,194.88/3,396.72
6. Step 6: Final answer
   x = 2,972.04