Finding the Fourth Proportional to 12,455.42, 17,196.90 and 9,486.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,455.42 : 17,196.90 = 9,486.59 : x
2. Step 2: Convert to fraction form
   12,455.42/17,196.90 = 9,486.59/x
3. Step 3: Cross multiply
   12,455.42x = 17,196.90 × 9,486.59
4. Step 4: Simplify right side
   12,455.42x = 163,139,939.57
5. Step 5: Solve for x
   x = 163,139,939.57/12,455.42
6. Step 6: Final answer
   x = 13,097.91