Finding the Fourth Proportional to 12,100.82, 18,047.72 and 10,629.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.82 : 18,047.72 = 10,629.68 : x
2. Step 2: Convert to fraction form
   12,100.82/18,047.72 = 10,629.68/x
3. Step 3: Cross multiply
   12,100.82x = 18,047.72 × 10,629.68
4. Step 4: Simplify right side
   12,100.82x = 191,841,344.94
5. Step 5: Solve for x
   x = 191,841,344.94/12,100.82
6. Step 6: Final answer
   x = 15,853.59