Finding the Fourth Proportional to 5,185.31, 7,155.49 and 2,916.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.31 : 7,155.49 = 2,916.53 : x
2. Step 2: Convert to fraction form
   5,185.31/7,155.49 = 2,916.53/x
3. Step 3: Cross multiply
   5,185.31x = 7,155.49 × 2,916.53
4. Step 4: Simplify right side
   5,185.31x = 20,869,158.18
5. Step 5: Solve for x
   x = 20,869,158.18/5,185.31
6. Step 6: Final answer
   x = 4,024.67