Finding the Fourth Proportional to 12,164.06, 16,775.91 and 7,913.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,164.06 : 16,775.91 = 7,913.57 : x
2. Step 2: Convert to fraction form
   12,164.06/16,775.91 = 7,913.57/x
3. Step 3: Cross multiply
   12,164.06x = 16,775.91 × 7,913.57
4. Step 4: Simplify right side
   12,164.06x = 132,757,288.10
5. Step 5: Solve for x
   x = 132,757,288.10/12,164.06
6. Step 6: Final answer
   x = 10,913.90