Finding the Fourth Proportional to 12,274.86, 18,412.91 and 3,511.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,274.86 : 18,412.91 = 3,511.07 : x
2. Step 2: Convert to fraction form
   12,274.86/18,412.91 = 3,511.07/x
3. Step 3: Cross multiply
   12,274.86x = 18,412.91 × 3,511.07
4. Step 4: Simplify right side
   12,274.86x = 64,648,906.29
5. Step 5: Solve for x
   x = 64,648,906.29/12,274.86
6. Step 6: Final answer
   x = 5,266.77