Finding the Fourth Proportional to 7,700.59, 10,557.53 and 7,560.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,700.59 : 10,557.53 = 7,560.46 : x
2. Step 2: Convert to fraction form
   7,700.59/10,557.53 = 7,560.46/x
3. Step 3: Cross multiply
   7,700.59x = 10,557.53 × 7,560.46
4. Step 4: Simplify right side
   7,700.59x = 79,819,829.54
5. Step 5: Solve for x
   x = 79,819,829.54/7,700.59
6. Step 6: Final answer
   x = 10,365.42