Finding the Fourth Proportional to 7,715.28, 10,636.79 and 5,792.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,715.28 : 10,636.79 = 5,792.96 : x
2. Step 2: Convert to fraction form
   7,715.28/10,636.79 = 5,792.96/x
3. Step 3: Cross multiply
   7,715.28x = 10,636.79 × 5,792.96
4. Step 4: Simplify right side
   7,715.28x = 61,618,499.00
5. Step 5: Solve for x
   x = 61,618,499.00/7,715.28
6. Step 6: Final answer
   x = 7,986.55