Finding the Fourth Proportional to 23,578.69, 35,360.52 and 7,780.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,578.69 : 35,360.52 = 7,780.78 : x
2. Step 2: Convert to fraction form
   23,578.69/35,360.52 = 7,780.78/x
3. Step 3: Cross multiply
   23,578.69x = 35,360.52 × 7,780.78
4. Step 4: Simplify right side
   23,578.69x = 275,132,250.00
5. Step 5: Solve for x
   x = 275,132,250.00/23,578.69
6. Step 6: Final answer
   x = 11,668.69