Finding the Fourth Proportional to 12,688.42, 19,036.83 and 8,003.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688.42 : 19,036.83 = 8,003.02 : x
2. Step 2: Convert to fraction form
   12,688.42/19,036.83 = 8,003.02/x
3. Step 3: Cross multiply
   12,688.42x = 19,036.83 × 8,003.02
4. Step 4: Simplify right side
   12,688.42x = 152,352,131.23
5. Step 5: Solve for x
   x = 152,352,131.23/12,688.42
6. Step 6: Final answer
   x = 12,007.18