Finding the Fourth Proportional to 16,931.82, 23,367.33 and 9,858.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.82 : 23,367.33 = 9,858.72 : x
2. Step 2: Convert to fraction form
   16,931.82/23,367.33 = 9,858.72/x
3. Step 3: Cross multiply
   16,931.82x = 23,367.33 × 9,858.72
4. Step 4: Simplify right side
   16,931.82x = 230,371,963.62
5. Step 5: Solve for x
   x = 230,371,963.62/16,931.82
6. Step 6: Final answer
   x = 13,605.86