Finding the Fourth Proportional to 8,974.92, 12,386.06 and 5,199.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.92 : 12,386.06 = 5,199.10 : x
2. Step 2: Convert to fraction form
   8,974.92/12,386.06 = 5,199.10/x
3. Step 3: Cross multiply
   8,974.92x = 12,386.06 × 5,199.10
4. Step 4: Simplify right side
   8,974.92x = 64,396,364.55
5. Step 5: Solve for x
   x = 64,396,364.55/8,974.92
6. Step 6: Final answer
   x = 7,175.15