Finding the Fourth Proportional to 12,766.41, 17,617.29 and 7,100.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,766.41 : 17,617.29 = 7,100.87 : x
2. Step 2: Convert to fraction form
   12,766.41/17,617.29 = 7,100.87/x
3. Step 3: Cross multiply
   12,766.41x = 17,617.29 × 7,100.87
4. Step 4: Simplify right side
   12,766.41x = 125,097,997.96
5. Step 5: Solve for x
   x = 125,097,997.96/12,766.41
6. Step 6: Final answer
   x = 9,799.00