Finding the Fourth Proportional to 12,521.34, 17,272.31 and 8,937.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,521.34 : 17,272.31 = 8,937.09 : x
2. Step 2: Convert to fraction form
   12,521.34/17,272.31 = 8,937.09/x
3. Step 3: Cross multiply
   12,521.34x = 17,272.31 × 8,937.09
4. Step 4: Simplify right side
   12,521.34x = 154,364,144.29
5. Step 5: Solve for x
   x = 154,364,144.29/12,521.34
6. Step 6: Final answer
   x = 12,328.09