Finding the Fourth Proportional to 16,109.51, 22,231.86 and 9,394.07

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.51 : 22,231.86 = 9,394.07 : x
2. Step 2: Convert to fraction form
   16,109.51/22,231.86 = 9,394.07/x
3. Step 3: Cross multiply
   16,109.51x = 22,231.86 × 9,394.07
4. Step 4: Simplify right side
   16,109.51x = 208,847,649.07
5. Step 5: Solve for x
   x = 208,847,649.07/16,109.51
6. Step 6: Final answer
   x = 12,964.25