Finding the Fourth Proportional to 12,141.05, 16,752.69 and 7,667.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,141.05 : 16,752.69 = 7,667.21 : x
2. Step 2: Convert to fraction form
   12,141.05/16,752.69 = 7,667.21/x
3. Step 3: Cross multiply
   12,141.05x = 16,752.69 × 7,667.21
4. Step 4: Simplify right side
   12,141.05x = 128,446,392.29
5. Step 5: Solve for x
   x = 128,446,392.29/12,141.05
6. Step 6: Final answer
   x = 10,579.51