Finding the Fourth Proportional to 3,384.72, 5,069.98 and 2,151.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,384.72 : 5,069.98 = 2,151.49 : x
2. Step 2: Convert to fraction form
   3,384.72/5,069.98 = 2,151.49/x
3. Step 3: Cross multiply
   3,384.72x = 5,069.98 × 2,151.49
4. Step 4: Simplify right side
   3,384.72x = 10,908,011.27
5. Step 5: Solve for x
   x = 10,908,011.27/3,384.72
6. Step 6: Final answer
   x = 3,222.72