Finding the Fourth Proportional to 11,944.90, 16,429.16 and 9,581.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,944.90 : 16,429.16 = 9,581.86 : x
2. Step 2: Convert to fraction form
   11,944.90/16,429.16 = 9,581.86/x
3. Step 3: Cross multiply
   11,944.90x = 16,429.16 × 9,581.86
4. Step 4: Simplify right side
   11,944.90x = 157,421,780.98
5. Step 5: Solve for x
   x = 157,421,780.98/11,944.90
6. Step 6: Final answer
   x = 13,179.00