Finding the Fourth Proportional to 7,688.31, 10,610.88 and 4,331.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,688.31 : 10,610.88 = 4,331.79 : x
2. Step 2: Convert to fraction form
   7,688.31/10,610.88 = 4,331.79/x
3. Step 3: Cross multiply
   7,688.31x = 10,610.88 × 4,331.79
4. Step 4: Simplify right side
   7,688.31x = 45,964,050.82
5. Step 5: Solve for x
   x = 45,964,050.82/7,688.31
6. Step 6: Final answer
   x = 5,978.43