Finding the Fourth Proportional to 12,898.07, 19,333.39 and 8,203.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,898.07 : 19,333.39 = 8,203.31 : x
2. Step 2: Convert to fraction form
   12,898.07/19,333.39 = 8,203.31/x
3. Step 3: Cross multiply
   12,898.07x = 19,333.39 × 8,203.31
4. Step 4: Simplify right side
   12,898.07x = 158,597,791.52
5. Step 5: Solve for x
   x = 158,597,791.52/12,898.07
6. Step 6: Final answer
   x = 12,296.24