Finding the Fourth Proportional to 12,310.61, 18,471.94 and 7,629.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,310.61 : 18,471.94 = 7,629.37 : x
2. Step 2: Convert to fraction form
   12,310.61/18,471.94 = 7,629.37/x
3. Step 3: Cross multiply
   12,310.61x = 18,471.94 × 7,629.37
4. Step 4: Simplify right side
   12,310.61x = 140,929,199.62
5. Step 5: Solve for x
   x = 140,929,199.62/12,310.61
6. Step 6: Final answer
   x = 11,447.79