Finding the Fourth Proportional to 16,971.77, 25,460.49 and 7,111.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,971.77 : 25,460.49 = 7,111.79 : x
2. Step 2: Convert to fraction form
   16,971.77/25,460.49 = 7,111.79/x
3. Step 3: Cross multiply
   16,971.77x = 25,460.49 × 7,111.79
4. Step 4: Simplify right side
   16,971.77x = 181,069,721.83
5. Step 5: Solve for x
   x = 181,069,721.83/16,971.77
6. Step 6: Final answer
   x = 10,668.88