Finding the Fourth Proportional to 17,091.68, 25,619.28 and 7,730.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,091.68 : 25,619.28 = 7,730.72 : x
2. Step 2: Convert to fraction form
   17,091.68/25,619.28 = 7,730.72/x
3. Step 3: Cross multiply
   17,091.68x = 25,619.28 × 7,730.72
4. Step 4: Simplify right side
   17,091.68x = 198,055,480.28
5. Step 5: Solve for x
   x = 198,055,480.28/17,091.68
6. Step 6: Final answer
   x = 11,587.83