Finding the Fourth Proportional to 12,402.49, 17,112.77 and 7,368.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402.49 : 17,112.77 = 7,368.40 : x
2. Step 2: Convert to fraction form
   12,402.49/17,112.77 = 7,368.40/x
3. Step 3: Cross multiply
   12,402.49x = 17,112.77 × 7,368.40
4. Step 4: Simplify right side
   12,402.49x = 126,093,734.47
5. Step 5: Solve for x
   x = 126,093,734.47/12,402.49
6. Step 6: Final answer
   x = 10,166.81