Finding the Fourth Proportional to 11,800.80, 16,276.68 and 7,605

Step by Step Solution

1. Step 1: Write the proportion equation
   11,800.80 : 16,276.68 = 7,605 : x
2. Step 2: Convert to fraction form
   11,800.80/16,276.68 = 7,605/x
3. Step 3: Cross multiply
   11,800.80x = 16,276.68 × 7,605
4. Step 4: Simplify right side
   11,800.80x = 123,784,151.40
5. Step 5: Solve for x
   x = 123,784,151.40/11,800.80
6. Step 6: Final answer
   x = 10,489.47