Finding the Fourth Proportional to 12,364.86, 17,065.89 and 9,670.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,364.86 : 17,065.89 = 9,670.71 : x
2. Step 2: Convert to fraction form
   12,364.86/17,065.89 = 9,670.71/x
3. Step 3: Cross multiply
   12,364.86x = 17,065.89 × 9,670.71
4. Step 4: Simplify right side
   12,364.86x = 165,039,273.08
5. Step 5: Solve for x
   x = 165,039,273.08/12,364.86
6. Step 6: Final answer
   x = 13,347.44