Finding the Fourth Proportional to 11,357.47, 17,111.91 and 10,460.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,357.47 : 17,111.91 = 10,460.80 : x
2. Step 2: Convert to fraction form
   11,357.47/17,111.91 = 10,460.80/x
3. Step 3: Cross multiply
   11,357.47x = 17,111.91 × 10,460.80
4. Step 4: Simplify right side
   11,357.47x = 179,004,173.65
5. Step 5: Solve for x
   x = 179,004,173.65/11,357.47
6. Step 6: Final answer
   x = 15,760.93