Finding the Fourth Proportional to 16,681.32, 23,017.02 and 9,511.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,681.32 : 23,017.02 = 9,511.10 : x
2. Step 2: Convert to fraction form
   16,681.32/23,017.02 = 9,511.10/x
3. Step 3: Cross multiply
   16,681.32x = 23,017.02 × 9,511.10
4. Step 4: Simplify right side
   16,681.32x = 218,917,178.92
5. Step 5: Solve for x
   x = 218,917,178.92/16,681.32
6. Step 6: Final answer
   x = 13,123.49