Finding the Fourth Proportional to 16,791.96, 23,166.86 and 9,619.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,791.96 : 23,166.86 = 9,619.98 : x
2. Step 2: Convert to fraction form
   16,791.96/23,166.86 = 9,619.98/x
3. Step 3: Cross multiply
   16,791.96x = 23,166.86 × 9,619.98
4. Step 4: Simplify right side
   16,791.96x = 222,864,681.76
5. Step 5: Solve for x
   x = 222,864,681.76/16,791.96
6. Step 6: Final answer
   x = 13,272.11