Finding the Fourth Proportional to 12,766.53, 17,617.55 and 7,101.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,766.53 : 17,617.55 = 7,101.15 : x
2. Step 2: Convert to fraction form
   12,766.53/17,617.55 = 7,101.15/x
3. Step 3: Cross multiply
   12,766.53x = 17,617.55 × 7,101.15
4. Step 4: Simplify right side
   12,766.53x = 125,104,847.43
5. Step 5: Solve for x
   x = 125,104,847.43/12,766.53
6. Step 6: Final answer
   x = 9,799.44