Finding the Fourth Proportional to 12,111.34, 16,709.79 and 7,329.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.34 : 16,709.79 = 7,329.75 : x
2. Step 2: Convert to fraction form
   12,111.34/16,709.79 = 7,329.75/x
3. Step 3: Cross multiply
   12,111.34x = 16,709.79 × 7,329.75
4. Step 4: Simplify right side
   12,111.34x = 122,478,546.60
5. Step 5: Solve for x
   x = 122,478,546.60/12,111.34
6. Step 6: Final answer
   x = 10,112.72