Finding the Fourth Proportional to 12,777.27, 17,632.04 and 7,111.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,777.27 : 17,632.04 = 7,111.59 : x
2. Step 2: Convert to fraction form
   12,777.27/17,632.04 = 7,111.59/x
3. Step 3: Cross multiply
   12,777.27x = 17,632.04 × 7,111.59
4. Step 4: Simplify right side
   12,777.27x = 125,391,839.34
5. Step 5: Solve for x
   x = 125,391,839.34/12,777.27
6. Step 6: Final answer
   x = 9,813.66