Finding the Fourth Proportional to 12,472.17, 17,219.69 and 9,634.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,472.17 : 17,219.69 = 9,634.60 : x
2. Step 2: Convert to fraction form
   12,472.17/17,219.69 = 9,634.60/x
3. Step 3: Cross multiply
   12,472.17x = 17,219.69 × 9,634.60
4. Step 4: Simplify right side
   12,472.17x = 165,904,825.27
5. Step 5: Solve for x
   x = 165,904,825.27/12,472.17
6. Step 6: Final answer
   x = 13,302.00