Finding the Fourth Proportional to 7,721.67, 11,514.72 and 7,651.53

Step by Step Solution

1. Step 1: Write the proportion equation
   7,721.67 : 11,514.72 = 7,651.53 : x
2. Step 2: Convert to fraction form
   7,721.67/11,514.72 = 7,651.53/x
3. Step 3: Cross multiply
   7,721.67x = 11,514.72 × 7,651.53
4. Step 4: Simplify right side
   7,721.67x = 88,105,225.52
5. Step 5: Solve for x
   x = 88,105,225.52/7,721.67
6. Step 6: Final answer
   x = 11,410.13