Finding the Fourth Proportional to 12,448.52, 17,168.82 and 9,307.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,448.52 : 17,168.82 = 9,307.40 : x
2. Step 2: Convert to fraction form
   12,448.52/17,168.82 = 9,307.40/x
3. Step 3: Cross multiply
   12,448.52x = 17,168.82 × 9,307.40
4. Step 4: Simplify right side
   12,448.52x = 159,797,075.27
5. Step 5: Solve for x
   x = 159,797,075.27/12,448.52
6. Step 6: Final answer
   x = 12,836.63