Finding the Fourth Proportional to 12,776.16, 17,632.02 and 7,111.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,776.16 : 17,632.02 = 7,111.35 : x
2. Step 2: Convert to fraction form
   12,776.16/17,632.02 = 7,111.35/x
3. Step 3: Cross multiply
   12,776.16x = 17,632.02 × 7,111.35
4. Step 4: Simplify right side
   12,776.16x = 125,387,465.43
5. Step 5: Solve for x
   x = 125,387,465.43/12,776.16
6. Step 6: Final answer
   x = 9,814.17