Finding the Fourth Proportional to 8,606.99, 12,907.79 and 3,061.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,606.99 : 12,907.79 = 3,061.94 : x
2. Step 2: Convert to fraction form
   8,606.99/12,907.79 = 3,061.94/x
3. Step 3: Cross multiply
   8,606.99x = 12,907.79 × 3,061.94
4. Step 4: Simplify right side
   8,606.99x = 39,522,810.15
5. Step 5: Solve for x
   x = 39,522,810.15/8,606.99
6. Step 6: Final answer
   x = 4,591.94