Finding the Fourth Proportional to 13,233.29, 19,857.72 and 5,339.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,233.29 : 19,857.72 = 5,339.57 : x
2. Step 2: Convert to fraction form
   13,233.29/19,857.72 = 5,339.57/x
3. Step 3: Cross multiply
   13,233.29x = 19,857.72 × 5,339.57
4. Step 4: Simplify right side
   13,233.29x = 106,031,685.98
5. Step 5: Solve for x
   x = 106,031,685.98/13,233.29
6. Step 6: Final answer
   x = 8,012.50