Finding the Fourth Proportional to 9,155.05, 12,629.33 and 5,792.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.05 : 12,629.33 = 5,792.20 : x
2. Step 2: Convert to fraction form
   9,155.05/12,629.33 = 5,792.20/x
3. Step 3: Cross multiply
   9,155.05x = 12,629.33 × 5,792.20
4. Step 4: Simplify right side
   9,155.05x = 73,151,566.41
5. Step 5: Solve for x
   x = 73,151,566.41/9,155.05
6. Step 6: Final answer
   x = 7,990.30