Finding the Fourth Proportional to 11,906.22, 16,393.17 and 10,109.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,906.22 : 16,393.17 = 10,109.91 : x
2. Step 2: Convert to fraction form
   11,906.22/16,393.17 = 10,109.91/x
3. Step 3: Cross multiply
   11,906.22x = 16,393.17 × 10,109.91
4. Step 4: Simplify right side
   11,906.22x = 165,733,473.31
5. Step 5: Solve for x
   x = 165,733,473.31/11,906.22
6. Step 6: Final answer
   x = 13,919.91