Finding the Fourth Proportional to 7,870.96, 10,829.46 and 7,676.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.96 : 10,829.46 = 7,676.56 : x
2. Step 2: Convert to fraction form
   7,870.96/10,829.46 = 7,676.56/x
3. Step 3: Cross multiply
   7,870.96x = 10,829.46 × 7,676.56
4. Step 4: Simplify right side
   7,870.96x = 83,132,999.46
5. Step 5: Solve for x
   x = 83,132,999.46/7,870.96
6. Step 6: Final answer
   x = 10,561.99