Finding the Fourth Proportional to 16,491.44, 22,758.64 and 9,417.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,491.44 : 22,758.64 = 9,417.72 : x
2. Step 2: Convert to fraction form
   16,491.44/22,758.64 = 9,417.72/x
3. Step 3: Cross multiply
   16,491.44x = 22,758.64 × 9,417.72
4. Step 4: Simplify right side
   16,491.44x = 214,334,499.10
5. Step 5: Solve for x
   x = 214,334,499.10/16,491.44
6. Step 6: Final answer
   x = 12,996.71