Finding the Fourth Proportional to 4,333.56, 6,492.16 and 2,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,333.56 : 6,492.16 = 2,139.72 : x
2. Step 2: Convert to fraction form
   4,333.56/6,492.16 = 2,139.72/x
3. Step 3: Cross multiply
   4,333.56x = 6,492.16 × 2,139.72
4. Step 4: Simplify right side
   4,333.56x = 13,891,404.60
5. Step 5: Solve for x
   x = 13,891,404.60/4,333.56
6. Step 6: Final answer
   x = 3,205.54