Finding the Fourth Proportional to 12,236.71, 18,353.50 and 3,916.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,236.71 : 18,353.50 = 3,916.03 : x
2. Step 2: Convert to fraction form
   12,236.71/18,353.50 = 3,916.03/x
3. Step 3: Cross multiply
   12,236.71x = 18,353.50 × 3,916.03
4. Step 4: Simplify right side
   12,236.71x = 71,872,856.61
5. Step 5: Solve for x
   x = 71,872,856.61/12,236.71
6. Step 6: Final answer
   x = 5,873.54