Finding the Fourth Proportional to 12,777.11, 17,632.59 and 7,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,777.11 : 17,632.59 = 7,112.10 : x
2. Step 2: Convert to fraction form
   12,777.11/17,632.59 = 7,112.10/x
3. Step 3: Cross multiply
   12,777.11x = 17,632.59 × 7,112.10
4. Step 4: Simplify right side
   12,777.11x = 125,404,743.34
5. Step 5: Solve for x
   x = 125,404,743.34/12,777.11
6. Step 6: Final answer
   x = 9,814.80