Finding the Fourth Proportional to 8,100.59, 12,137.21 and 4,974.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.59 : 12,137.21 = 4,974.08 : x
2. Step 2: Convert to fraction form
   8,100.59/12,137.21 = 4,974.08/x
3. Step 3: Cross multiply
   8,100.59x = 12,137.21 × 4,974.08
4. Step 4: Simplify right side
   8,100.59x = 60,371,428.65
5. Step 5: Solve for x
   x = 60,371,428.65/8,100.59
6. Step 6: Final answer
   x = 7,452.72