Finding the Fourth Proportional to 16,392.32, 22,621.15 and 9,221.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,392.32 : 22,621.15 = 9,221.69 : x
2. Step 2: Convert to fraction form
   16,392.32/22,621.15 = 9,221.69/x
3. Step 3: Cross multiply
   16,392.32x = 22,621.15 × 9,221.69
4. Step 4: Simplify right side
   16,392.32x = 208,605,300.82
5. Step 5: Solve for x
   x = 208,605,300.82/16,392.32
6. Step 6: Final answer
   x = 12,725.80