Finding the Fourth Proportional to 16,390.82, 22,619.32 and 9,317.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,390.82 : 22,619.32 = 9,317.69 : x
2. Step 2: Convert to fraction form
   16,390.82/22,619.32 = 9,317.69/x
3. Step 3: Cross multiply
   16,390.82x = 22,619.32 × 9,317.69
4. Step 4: Simplify right side
   16,390.82x = 210,759,811.77
5. Step 5: Solve for x
   x = 210,759,811.77/16,390.82
6. Step 6: Final answer
   x = 12,858.41