Finding the Fourth Proportional to 12,404.48, 17,100.48 and 8,866.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.48 : 17,100.48 = 8,866.40 : x
2. Step 2: Convert to fraction form
   12,404.48/17,100.48 = 8,866.40/x
3. Step 3: Cross multiply
   12,404.48x = 17,100.48 × 8,866.40
4. Step 4: Simplify right side
   12,404.48x = 151,619,695.87
5. Step 5: Solve for x
   x = 151,619,695.87/12,404.48
6. Step 6: Final answer
   x = 12,222.98