Finding the Fourth Proportional to 13,643.61, 18,827.99 and 7,675.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,643.61 : 18,827.99 = 7,675.29 : x
2. Step 2: Convert to fraction form
   13,643.61/18,827.99 = 7,675.29/x
3. Step 3: Cross multiply
   13,643.61x = 18,827.99 × 7,675.29
4. Step 4: Simplify right side
   13,643.61x = 144,510,150.85
5. Step 5: Solve for x
   x = 144,510,150.85/13,643.61
6. Step 6: Final answer
   x = 10,591.78