Finding the Fourth Proportional to 8,974.95, 12,386.42 and 5,198.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.95 : 12,386.42 = 5,198.06 : x
2. Step 2: Convert to fraction form
   8,974.95/12,386.42 = 5,198.06/x
3. Step 3: Cross multiply
   8,974.95x = 12,386.42 × 5,198.06
4. Step 4: Simplify right side
   8,974.95x = 64,385,266.42
5. Step 5: Solve for x
   x = 64,385,266.42/8,974.95
6. Step 6: Final answer
   x = 7,173.89