Finding the Fourth Proportional to 12,766.39, 17,617.36 and 7,100.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,766.39 : 17,617.36 = 7,100.94 : x
2. Step 2: Convert to fraction form
   12,766.39/17,617.36 = 7,100.94/x
3. Step 3: Cross multiply
   12,766.39x = 17,617.36 × 7,100.94
4. Step 4: Simplify right side
   12,766.39x = 125,099,816.32
5. Step 5: Solve for x
   x = 125,099,816.32/12,766.39
6. Step 6: Final answer
   x = 9,799.16