Finding the Fourth Proportional to 10,882.22, 15,012.34 and 7,891.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,882.22 : 15,012.34 = 7,891.49 : x
2. Step 2: Convert to fraction form
   10,882.22/15,012.34 = 7,891.49/x
3. Step 3: Cross multiply
   10,882.22x = 15,012.34 × 7,891.49
4. Step 4: Simplify right side
   10,882.22x = 118,469,748.79
5. Step 5: Solve for x
   x = 118,469,748.79/10,882.22
6. Step 6: Final answer
   x = 10,886.55