Finding the Fourth Proportional to 11,909.23, 16,397.31 and 10,112.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,909.23 : 16,397.31 = 10,112.94 : x
2. Step 2: Convert to fraction form
   11,909.23/16,397.31 = 10,112.94/x
3. Step 3: Cross multiply
   11,909.23x = 16,397.31 × 10,112.94
4. Step 4: Simplify right side
   11,909.23x = 165,825,050.11
5. Step 5: Solve for x
   x = 165,825,050.11/11,909.23
6. Step 6: Final answer
   x = 13,924.08