Finding the Fourth Proportional to 12,620.29, 17,408.77 and 7,896.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.29 : 17,408.77 = 7,896.37 : x
2. Step 2: Convert to fraction form
   12,620.29/17,408.77 = 7,896.37/x
3. Step 3: Cross multiply
   12,620.29x = 17,408.77 × 7,896.37
4. Step 4: Simplify right side
   12,620.29x = 137,466,089.16
5. Step 5: Solve for x
   x = 137,466,089.16/12,620.29
6. Step 6: Final answer
   x = 10,892.47