Finding the Fourth Proportional to 13,259.83, 18,301.35 and 8,411.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,259.83 : 18,301.35 = 8,411.42 : x
2. Step 2: Convert to fraction form
   13,259.83/18,301.35 = 8,411.42/x
3. Step 3: Cross multiply
   13,259.83x = 18,301.35 × 8,411.42
4. Step 4: Simplify right side
   13,259.83x = 153,940,341.42
5. Step 5: Solve for x
   x = 153,940,341.42/13,259.83
6. Step 6: Final answer
   x = 11,609.53