Finding the Fourth Proportional to 12,522.38, 17,256.56 and 9,339.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,522.38 : 17,256.56 = 9,339.34 : x
2. Step 2: Convert to fraction form
   12,522.38/17,256.56 = 9,339.34/x
3. Step 3: Cross multiply
   12,522.38x = 17,256.56 × 9,339.34
4. Step 4: Simplify right side
   12,522.38x = 161,164,881.07
5. Step 5: Solve for x
   x = 161,164,881.07/12,522.38
6. Step 6: Final answer
   x = 12,870.15