Finding the Fourth Proportional to 13,142.04, 18,141.42 and 10,618.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,142.04 : 18,141.42 = 10,618.04 : x
2. Step 2: Convert to fraction form
   13,142.04/18,141.42 = 10,618.04/x
3. Step 3: Cross multiply
   13,142.04x = 18,141.42 × 10,618.04
4. Step 4: Simplify right side
   13,142.04x = 192,626,323.22
5. Step 5: Solve for x
   x = 192,626,323.22/13,142.04
6. Step 6: Final answer
   x = 14,657.26