Finding the Fourth Proportional to 7,155.54, 10,715.99 and 3,636.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.54 : 10,715.99 = 3,636.29 : x
2. Step 2: Convert to fraction form
   7,155.54/10,715.99 = 3,636.29/x
3. Step 3: Cross multiply
   7,155.54x = 10,715.99 × 3,636.29
4. Step 4: Simplify right side
   7,155.54x = 38,966,455.89
5. Step 5: Solve for x
   x = 38,966,455.89/7,155.54
6. Step 6: Final answer
   x = 5,445.63