Finding the Fourth Proportional to 11,902.50, 16,418.61 and 7,424.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,902.50 : 16,418.61 = 7,424.10 : x
2. Step 2: Convert to fraction form
   11,902.50/16,418.61 = 7,424.10/x
3. Step 3: Cross multiply
   11,902.50x = 16,418.61 × 7,424.10
4. Step 4: Simplify right side
   11,902.50x = 121,893,402.50
5. Step 5: Solve for x
   x = 121,893,402.50/11,902.50
6. Step 6: Final answer
   x = 10,240.99