Finding the Fourth Proportional to 13,643.30, 18,827.57 and 7,674.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,643.30 : 18,827.57 = 7,674.96 : x
2. Step 2: Convert to fraction form
   13,643.30/18,827.57 = 7,674.96/x
3. Step 3: Cross multiply
   13,643.30x = 18,827.57 × 7,674.96
4. Step 4: Simplify right side
   13,643.30x = 144,500,846.65
5. Step 5: Solve for x
   x = 144,500,846.65/13,643.30
6. Step 6: Final answer
   x = 10,591.34