Finding the Fourth Proportional to 12,651, 17,464.86 and 7,940.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,651 : 17,464.86 = 7,940.04 : x
2. Step 2: Convert to fraction form
   12,651/17,464.86 = 7,940.04/x
3. Step 3: Cross multiply
   12,651x = 17,464.86 × 7,940.04
4. Step 4: Simplify right side
   12,651x = 138,671,686.99
5. Step 5: Solve for x
   x = 138,671,686.99/12,651
6. Step 6: Final answer
   x = 10,961.32