Finding the Fourth Proportional to 4,092.72, 5,645.52 and 2,972.16

Step by Step Solution

1. Step 1: Write the proportion equation
   4,092.72 : 5,645.52 = 2,972.16 : x
2. Step 2: Convert to fraction form
   4,092.72/5,645.52 = 2,972.16/x
3. Step 3: Cross multiply
   4,092.72x = 5,645.52 × 2,972.16
4. Step 4: Simplify right side
   4,092.72x = 16,779,388.72
5. Step 5: Solve for x
   x = 16,779,388.72/4,092.72
6. Step 6: Final answer
   x = 4,099.81