Finding the Fourth Proportional to 11,663.76, 17,521.56 and 10,108.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,663.76 : 17,521.56 = 10,108.56 : x
2. Step 2: Convert to fraction form
   11,663.76/17,521.56 = 10,108.56/x
3. Step 3: Cross multiply
   11,663.76x = 17,521.56 × 10,108.56
4. Step 4: Simplify right side
   11,663.76x = 177,117,740.55
5. Step 5: Solve for x
   x = 177,117,740.55/11,663.76
6. Step 6: Final answer
   x = 15,185.30