Finding the Fourth Proportional to 12,946.33, 17,868.89 and 9,165.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,946.33 : 17,868.89 = 9,165.57 : x
2. Step 2: Convert to fraction form
   12,946.33/17,868.89 = 9,165.57/x
3. Step 3: Cross multiply
   12,946.33x = 17,868.89 × 9,165.57
4. Step 4: Simplify right side
   12,946.33x = 163,778,562.12
5. Step 5: Solve for x
   x = 163,778,562.12/12,946.33
6. Step 6: Final answer
   x = 12,650.58