Finding the Fourth Proportional to 11,227.64, 15,500.81 and 9,982.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,227.64 : 15,500.81 = 9,982.18 : x
2. Step 2: Convert to fraction form
   11,227.64/15,500.81 = 9,982.18/x
3. Step 3: Cross multiply
   11,227.64x = 15,500.81 × 9,982.18
4. Step 4: Simplify right side
   11,227.64x = 154,731,748.15
5. Step 5: Solve for x
   x = 154,731,748.15/11,227.64
6. Step 6: Final answer
   x = 13,781.32