Finding the Fourth Proportional to 12,425.37, 17,164.22 and 9,904.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425.37 : 17,164.22 = 9,904.17 : x
2. Step 2: Convert to fraction form
   12,425.37/17,164.22 = 9,904.17/x
3. Step 3: Cross multiply
   12,425.37x = 17,164.22 × 9,904.17
4. Step 4: Simplify right side
   12,425.37x = 169,997,303.28
5. Step 5: Solve for x
   x = 169,997,303.28/12,425.37
6. Step 6: Final answer
   x = 13,681.47