Finding the Fourth Proportional to 7,608.10, 10,666.70 and 7,608.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,608.10 : 10,666.70 = 7,608.10 : x
2. Step 2: Convert to fraction form
   7,608.10/10,666.70 = 7,608.10/x
3. Step 3: Cross multiply
   7,608.10x = 10,666.70 × 7,608.10
4. Step 4: Simplify right side
   7,608.10x = 81,153,320.27
5. Step 5: Solve for x
   x = 81,153,320.27/7,608.10
6. Step 6: Final answer
   x = 10,666.70