Finding the Fourth Proportional to 8,792.12, 12,128.60 and 5,958.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,792.12 : 12,128.60 = 5,958.54 : x
2. Step 2: Convert to fraction form
   8,792.12/12,128.60 = 5,958.54/x
3. Step 3: Cross multiply
   8,792.12x = 12,128.60 × 5,958.54
4. Step 4: Simplify right side
   8,792.12x = 72,268,748.24
5. Step 5: Solve for x
   x = 72,268,748.24/8,792.12
6. Step 6: Final answer
   x = 8,219.72