Finding the Fourth Proportional to 4,388.72, 6,572.56 and 3,199.58

Step by Step Solution

1. Step 1: Write the proportion equation
   4,388.72 : 6,572.56 = 3,199.58 : x
2. Step 2: Convert to fraction form
   4,388.72/6,572.56 = 3,199.58/x
3. Step 3: Cross multiply
   4,388.72x = 6,572.56 × 3,199.58
4. Step 4: Simplify right side
   4,388.72x = 21,029,431.52
5. Step 5: Solve for x
   x = 21,029,431.52/4,388.72
6. Step 6: Final answer
   x = 4,791.70