Finding the Fourth Proportional to 11,375.76, 17,061.76 and 8,078.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,375.76 : 17,061.76 = 8,078.88 : x
2. Step 2: Convert to fraction form
   11,375.76/17,061.76 = 8,078.88/x
3. Step 3: Cross multiply
   11,375.76x = 17,061.76 × 8,078.88
4. Step 4: Simplify right side
   11,375.76x = 137,839,911.63
5. Step 5: Solve for x
   x = 137,839,911.63/11,375.76
6. Step 6: Final answer
   x = 12,116.98