Finding the Fourth Proportional to 16,391.34, 22,620.04 and 9,317.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,391.34 : 22,620.04 = 9,317.76 : x
2. Step 2: Convert to fraction form
   16,391.34/22,620.04 = 9,317.76/x
3. Step 3: Cross multiply
   16,391.34x = 22,620.04 × 9,317.76
4. Step 4: Simplify right side
   16,391.34x = 210,768,103.91
5. Step 5: Solve for x
   x = 210,768,103.91/16,391.34
6. Step 6: Final answer
   x = 12,858.50