Finding the Fourth Proportional to 10,105.68, 15,141.40 and 7,169.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.68 : 15,141.40 = 7,169.36 : x
2. Step 2: Convert to fraction form
   10,105.68/15,141.40 = 7,169.36/x
3. Step 3: Cross multiply
   10,105.68x = 15,141.40 × 7,169.36
4. Step 4: Simplify right side
   10,105.68x = 108,554,147.50
5. Step 5: Solve for x
   x = 108,554,147.50/10,105.68
6. Step 6: Final answer
   x = 10,741.89