Finding the Fourth Proportional to 12,663.86, 17,470.76 and 8,473.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,663.86 : 17,470.76 = 8,473.46 : x
2. Step 2: Convert to fraction form
   12,663.86/17,470.76 = 8,473.46/x
3. Step 3: Cross multiply
   12,663.86x = 17,470.76 × 8,473.46
4. Step 4: Simplify right side
   12,663.86x = 148,037,786.03
5. Step 5: Solve for x
   x = 148,037,786.03/12,663.86
6. Step 6: Final answer
   x = 11,689.78