Finding the Fourth Proportional to 12,965.27, 17,886.80 and 9,570.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,965.27 : 17,886.80 = 9,570.41 : x
2. Step 2: Convert to fraction form
   12,965.27/17,886.80 = 9,570.41/x
3. Step 3: Cross multiply
   12,965.27x = 17,886.80 × 9,570.41
4. Step 4: Simplify right side
   12,965.27x = 171,184,034.55
5. Step 5: Solve for x
   x = 171,184,034.55/12,965.27
6. Step 6: Final answer
   x = 13,203.27