Finding the Fourth Proportional to 12,913.30, 17,824.17 and 7,609.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913.30 : 17,824.17 = 7,609.83 : x
2. Step 2: Convert to fraction form
   12,913.30/17,824.17 = 7,609.83/x
3. Step 3: Cross multiply
   12,913.30x = 17,824.17 × 7,609.83
4. Step 4: Simplify right side
   12,913.30x = 135,638,903.59
5. Step 5: Solve for x
   x = 135,638,903.59/12,913.30
6. Step 6: Final answer
   x = 10,503.81