Finding the Fourth Proportional to 9,946.08, 14,978.34 and 8,663.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,946.08 : 14,978.34 = 8,663.04 : x
2. Step 2: Convert to fraction form
   9,946.08/14,978.34 = 8,663.04/x
3. Step 3: Cross multiply
   9,946.08x = 14,978.34 × 8,663.04
4. Step 4: Simplify right side
   9,946.08x = 129,757,958.55
5. Step 5: Solve for x
   x = 129,757,958.55/9,946.08
6. Step 6: Final answer
   x = 13,046.14