Finding the Fourth Proportional to 16,225.90, 22,392.60 and 9,513.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,225.90 : 22,392.60 = 9,513.69 : x
2. Step 2: Convert to fraction form
   16,225.90/22,392.60 = 9,513.69/x
3. Step 3: Cross multiply
   16,225.90x = 22,392.60 × 9,513.69
4. Step 4: Simplify right side
   16,225.90x = 213,036,254.69
5. Step 5: Solve for x
   x = 213,036,254.69/16,225.90
6. Step 6: Final answer
   x = 13,129.40