Finding the Fourth Proportional to 11,196.50, 15,440.96 and 8,670.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,196.50 : 15,440.96 = 8,670.56 : x
2. Step 2: Convert to fraction form
   11,196.50/15,440.96 = 8,670.56/x
3. Step 3: Cross multiply
   11,196.50x = 15,440.96 × 8,670.56
4. Step 4: Simplify right side
   11,196.50x = 133,881,770.14
5. Step 5: Solve for x
   x = 133,881,770.14/11,196.50
6. Step 6: Final answer
   x = 11,957.47