Finding the Fourth Proportional to 12,434.57, 17,146.81 and 9,602.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.57 : 17,146.81 = 9,602.40 : x
2. Step 2: Convert to fraction form
   12,434.57/17,146.81 = 9,602.40/x
3. Step 3: Cross multiply
   12,434.57x = 17,146.81 × 9,602.40
4. Step 4: Simplify right side
   12,434.57x = 164,650,528.34
5. Step 5: Solve for x
   x = 164,650,528.34/12,434.57
6. Step 6: Final answer
   x = 13,241.35