Finding the Fourth Proportional to 8,146.20, 12,191.61 and 5,028.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,146.20 : 12,191.61 = 5,028.18 : x
2. Step 2: Convert to fraction form
   8,146.20/12,191.61 = 5,028.18/x
3. Step 3: Cross multiply
   8,146.20x = 12,191.61 × 5,028.18
4. Step 4: Simplify right side
   8,146.20x = 61,301,609.57
5. Step 5: Solve for x
   x = 61,301,609.57/8,146.20
6. Step 6: Final answer
   x = 7,525.18