Finding the Fourth Proportional to 16,516.21, 22,789.52 and 9,346.45

Step by Step Solution

1. Step 1: Write the proportion equation
   16,516.21 : 22,789.52 = 9,346.45 : x
2. Step 2: Convert to fraction form
   16,516.21/22,789.52 = 9,346.45/x
3. Step 3: Cross multiply
   16,516.21x = 22,789.52 × 9,346.45
4. Step 4: Simplify right side
   16,516.21x = 213,001,062.47
5. Step 5: Solve for x
   x = 213,001,062.47/16,516.21
6. Step 6: Final answer
   x = 12,896.49