Finding the Fourth Proportional to 10,907.73, 15,061.55 and 8,891.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,907.73 : 15,061.55 = 8,891.46 : x
2. Step 2: Convert to fraction form
   10,907.73/15,061.55 = 8,891.46/x
3. Step 3: Cross multiply
   10,907.73x = 15,061.55 × 8,891.46
4. Step 4: Simplify right side
   10,907.73x = 133,919,124.91
5. Step 5: Solve for x
   x = 133,919,124.91/10,907.73
6. Step 6: Final answer
   x = 12,277.45