Finding the Fourth Proportional to 12,456.01, 17,165.59 and 8,913.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.01 : 17,165.59 = 8,913.07 : x
2. Step 2: Convert to fraction form
   12,456.01/17,165.59 = 8,913.07/x
3. Step 3: Cross multiply
   12,456.01x = 17,165.59 × 8,913.07
4. Step 4: Simplify right side
   12,456.01x = 152,998,105.26
5. Step 5: Solve for x
   x = 152,998,105.26/12,456.01
6. Step 6: Final answer
   x = 12,283.08