Finding the Fourth Proportional to 17,081.78, 25,625.32 and 7,221.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,081.78 : 25,625.32 = 7,221.10 : x
2. Step 2: Convert to fraction form
   17,081.78/25,625.32 = 7,221.10/x
3. Step 3: Cross multiply
   17,081.78x = 25,625.32 × 7,221.10
4. Step 4: Simplify right side
   17,081.78x = 185,042,998.25
5. Step 5: Solve for x
   x = 185,042,998.25/17,081.78
6. Step 6: Final answer
   x = 10,832.77