Finding the Fourth Proportional to 11,776.32, 17,651.33 and 5,105.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,776.32 : 17,651.33 = 5,105.12 : x
2. Step 2: Convert to fraction form
   11,776.32/17,651.33 = 5,105.12/x
3. Step 3: Cross multiply
   11,776.32x = 17,651.33 × 5,105.12
4. Step 4: Simplify right side
   11,776.32x = 90,112,044.03
5. Step 5: Solve for x
   x = 90,112,044.03/11,776.32
6. Step 6: Final answer
   x = 7,651.97