Finding the Fourth Proportional to 16,320.72, 22,529.16 and 12,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,320.72 : 22,529.16 = 12,342.72 : x
2. Step 2: Convert to fraction form
   16,320.72/22,529.16 = 12,342.72/x
3. Step 3: Cross multiply
   16,320.72x = 22,529.16 × 12,342.72
4. Step 4: Simplify right side
   16,320.72x = 278,071,113.72
5. Step 5: Solve for x
   x = 278,071,113.72/16,320.72
6. Step 6: Final answer
   x = 17,037.92