Finding the Fourth Proportional to 12,375.45, 17,081.42 and 7,657.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,375.45 : 17,081.42 = 7,657.07 : x
2. Step 2: Convert to fraction form
   12,375.45/17,081.42 = 7,657.07/x
3. Step 3: Cross multiply
   12,375.45x = 17,081.42 × 7,657.07
4. Step 4: Simplify right side
   12,375.45x = 130,793,504.95
5. Step 5: Solve for x
   x = 130,793,504.95/12,375.45
6. Step 6: Final answer
   x = 10,568.79