Finding the Fourth Proportional to 13,118.69, 19,680.78 and 7,263.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.69 : 19,680.78 = 7,263.02 : x
2. Step 2: Convert to fraction form
   13,118.69/19,680.78 = 7,263.02/x
3. Step 3: Cross multiply
   13,118.69x = 19,680.78 × 7,263.02
4. Step 4: Simplify right side
   13,118.69x = 142,941,975.19
5. Step 5: Solve for x
   x = 142,941,975.19/13,118.69
6. Step 6: Final answer
   x = 10,896.05