Finding the Fourth Proportional to 7,715.25, 10,654.34 and 5,615.73

Step by Step Solution

1. Step 1: Write the proportion equation
   7,715.25 : 10,654.34 = 5,615.73 : x
2. Step 2: Convert to fraction form
   7,715.25/10,654.34 = 5,615.73/x
3. Step 3: Cross multiply
   7,715.25x = 10,654.34 × 5,615.73
4. Step 4: Simplify right side
   7,715.25x = 59,831,868.69
5. Step 5: Solve for x
   x = 59,831,868.69/7,715.25
6. Step 6: Final answer
   x = 7,755.01