Finding the Fourth Proportional to 12,635.31, 17,433.23 and 8,159.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,635.31 : 17,433.23 = 8,159.25 : x
2. Step 2: Convert to fraction form
   12,635.31/17,433.23 = 8,159.25/x
3. Step 3: Cross multiply
   12,635.31x = 17,433.23 × 8,159.25
4. Step 4: Simplify right side
   12,635.31x = 142,242,041.08
5. Step 5: Solve for x
   x = 142,242,041.08/12,635.31
6. Step 6: Final answer
   x = 11,257.50