Finding the Fourth Proportional to 3,838.72, 5,297.16 and 2,160.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,838.72 : 5,297.16 = 2,160.22 : x
2. Step 2: Convert to fraction form
   3,838.72/5,297.16 = 2,160.22/x
3. Step 3: Cross multiply
   3,838.72x = 5,297.16 × 2,160.22
4. Step 4: Simplify right side
   3,838.72x = 11,443,030.98
5. Step 5: Solve for x
   x = 11,443,030.98/3,838.72
6. Step 6: Final answer
   x = 2,980.95