Finding the Fourth Proportional to 10,949.76, 15,116.80 and 7,230.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,949.76 : 15,116.80 = 7,230.24 : x
2. Step 2: Convert to fraction form
   10,949.76/15,116.80 = 7,230.24/x
3. Step 3: Cross multiply
   10,949.76x = 15,116.80 × 7,230.24
4. Step 4: Simplify right side
   10,949.76x = 109,298,092.03
5. Step 5: Solve for x
   x = 109,298,092.03/10,949.76
6. Step 6: Final answer
   x = 9,981.78