Finding the Fourth Proportional to 13,100.67, 19,647.77 and 8,167.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.67 : 19,647.77 = 8,167.77 : x
2. Step 2: Convert to fraction form
   13,100.67/19,647.77 = 8,167.77/x
3. Step 3: Cross multiply
   13,100.67x = 19,647.77 × 8,167.77
4. Step 4: Simplify right side
   13,100.67x = 160,478,425.53
5. Step 5: Solve for x
   x = 160,478,425.53/13,100.67
6. Step 6: Final answer
   x = 12,249.63