Finding the Fourth Proportional to 12,408.50, 17,116.80 and 7,625.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,408.50 : 17,116.80 = 7,625.13 : x
2. Step 2: Convert to fraction form
   12,408.50/17,116.80 = 7,625.13/x
3. Step 3: Cross multiply
   12,408.50x = 17,116.80 × 7,625.13
4. Step 4: Simplify right side
   12,408.50x = 130,517,789.59
5. Step 5: Solve for x
   x = 130,517,789.59/12,408.50
6. Step 6: Final answer
   x = 10,518.42