Finding the Fourth Proportional to 13,124.43, 18,101.48 and 8,409.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.43 : 18,101.48 = 8,409.15 : x
2. Step 2: Convert to fraction form
   13,124.43/18,101.48 = 8,409.15/x
3. Step 3: Cross multiply
   13,124.43x = 18,101.48 × 8,409.15
4. Step 4: Simplify right side
   13,124.43x = 152,218,018.50
5. Step 5: Solve for x
   x = 152,218,018.50/13,124.43
6. Step 6: Final answer
   x = 11,598.07