Finding the Fourth Proportional to 4,970.72, 6,856.72 and 3,082.60

Step by Step Solution

1. Step 1: Write the proportion equation
   4,970.72 : 6,856.72 = 3,082.60 : x
2. Step 2: Convert to fraction form
   4,970.72/6,856.72 = 3,082.60/x
3. Step 3: Cross multiply
   4,970.72x = 6,856.72 × 3,082.60
4. Step 4: Simplify right side
   4,970.72x = 21,136,525.07
5. Step 5: Solve for x
   x = 21,136,525.07/4,970.72
6. Step 6: Final answer
   x = 4,252.21