Finding the Fourth Proportional to 12,687.42, 19,035.33 and 8,002.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,687.42 : 19,035.33 = 8,002.02 : x
2. Step 2: Convert to fraction form
   12,687.42/19,035.33 = 8,002.02/x
3. Step 3: Cross multiply
   12,687.42x = 19,035.33 × 8,002.02
4. Step 4: Simplify right side
   12,687.42x = 152,321,091.37
5. Step 5: Solve for x
   x = 152,321,091.37/12,687.42
6. Step 6: Final answer
   x = 12,005.68