Finding the Fourth Proportional to 7,608.60, 10,515.42 and 7,608.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,608.60 : 10,515.42 = 7,608.60 : x
2. Step 2: Convert to fraction form
   7,608.60/10,515.42 = 7,608.60/x
3. Step 3: Cross multiply
   7,608.60x = 10,515.42 × 7,608.60
4. Step 4: Simplify right side
   7,608.60x = 80,007,624.61
5. Step 5: Solve for x
   x = 80,007,624.61/7,608.60
6. Step 6: Final answer
   x = 10,515.42