Finding the Fourth Proportional to 16,499.32, 22,772 and 12,513.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,499.32 : 22,772 = 12,513.72 : x
2. Step 2: Convert to fraction form
   16,499.32/22,772 = 12,513.72/x
3. Step 3: Cross multiply
   16,499.32x = 22,772 × 12,513.72
4. Step 4: Simplify right side
   16,499.32x = 284,962,431.84
5. Step 5: Solve for x
   x = 284,962,431.84/16,499.32
6. Step 6: Final answer
   x = 17,271.16