Finding the Fourth Proportional to 10,876.55, 15,004.56 and 7,689.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,876.55 : 15,004.56 = 7,689.88 : x
2. Step 2: Convert to fraction form
   10,876.55/15,004.56 = 7,689.88/x
3. Step 3: Cross multiply
   10,876.55x = 15,004.56 × 7,689.88
4. Step 4: Simplify right side
   10,876.55x = 115,383,228.34
5. Step 5: Solve for x
   x = 115,383,228.34/10,876.55
6. Step 6: Final answer
   x = 10,608.44