Finding the Fourth Proportional to 13,002.17, 19,535.34 and 8,324.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.17 : 19,535.34 = 8,324.21 : x
2. Step 2: Convert to fraction form
   13,002.17/19,535.34 = 8,324.21/x
3. Step 3: Cross multiply
   13,002.17x = 19,535.34 × 8,324.21
4. Step 4: Simplify right side
   13,002.17x = 162,616,174.90
5. Step 5: Solve for x
   x = 162,616,174.90/13,002.17
6. Step 6: Final answer
   x = 12,506.85