Finding the Fourth Proportional to 12,800.02, 19,167.96 and 8,105.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,800.02 : 19,167.96 = 8,105.86 : x
2. Step 2: Convert to fraction form
   12,800.02/19,167.96 = 8,105.86/x
3. Step 3: Cross multiply
   12,800.02x = 19,167.96 × 8,105.86
4. Step 4: Simplify right side
   12,800.02x = 155,372,800.25
5. Step 5: Solve for x
   x = 155,372,800.25/12,800.02
6. Step 6: Final answer
   x = 12,138.48