Finding the Fourth Proportional to 10,651.74, 15,978.33 and 7,764.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,651.74 : 15,978.33 = 7,764.54 : x
2. Step 2: Convert to fraction form
   10,651.74/15,978.33 = 7,764.54/x
3. Step 3: Cross multiply
   10,651.74x = 15,978.33 × 7,764.54
4. Step 4: Simplify right side
   10,651.74x = 124,064,382.42
5. Step 5: Solve for x
   x = 124,064,382.42/10,651.74
6. Step 6: Final answer
   x = 11,647.33