Finding the Fourth Proportional to 17,085.90, 25,633.65 and 8,321.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,085.90 : 25,633.65 = 8,321.10 : x
2. Step 2: Convert to fraction form
   17,085.90/25,633.65 = 8,321.10/x
3. Step 3: Cross multiply
   17,085.90x = 25,633.65 × 8,321.10
4. Step 4: Simplify right side
   17,085.90x = 213,300,165.02
5. Step 5: Solve for x
   x = 213,300,165.02/17,085.90
6. Step 6: Final answer
   x = 12,483.99