Finding the Fourth Proportional to 12,020.30, 16,595.73 and 7,777.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020.30 : 16,595.73 = 7,777.88 : x
2. Step 2: Convert to fraction form
   12,020.30/16,595.73 = 7,777.88/x
3. Step 3: Cross multiply
   12,020.30x = 16,595.73 × 7,777.88
4. Step 4: Simplify right side
   12,020.30x = 129,079,513.47
5. Step 5: Solve for x
   x = 129,079,513.47/12,020.30
6. Step 6: Final answer
   x = 10,738.46