Finding the Fourth Proportional to 7,665.92, 10,577.60 and 5,570.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,665.92 : 10,577.60 = 5,570.88 : x
2. Step 2: Convert to fraction form
   7,665.92/10,577.60 = 5,570.88/x
3. Step 3: Cross multiply
   7,665.92x = 10,577.60 × 5,570.88
4. Step 4: Simplify right side
   7,665.92x = 58,926,540.29
5. Step 5: Solve for x
   x = 58,926,540.29/7,665.92
6. Step 6: Final answer
   x = 7,686.82