Finding the Fourth Proportional to 16,965.58, 23,412.52 and 9,411.91

Step by Step Solution

1. Step 1: Write the proportion equation
   16,965.58 : 23,412.52 = 9,411.91 : x
2. Step 2: Convert to fraction form
   16,965.58/23,412.52 = 9,411.91/x
3. Step 3: Cross multiply
   16,965.58x = 23,412.52 × 9,411.91
4. Step 4: Simplify right side
   16,965.58x = 220,356,496.11
5. Step 5: Solve for x
   x = 220,356,496.11/16,965.58
6. Step 6: Final answer
   x = 12,988.45