Finding the Fourth Proportional to 12,615.96, 18,926.72 and 3,851.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,615.96 : 18,926.72 = 3,851.56 : x
2. Step 2: Convert to fraction form
   12,615.96/18,926.72 = 3,851.56/x
3. Step 3: Cross multiply
   12,615.96x = 18,926.72 × 3,851.56
4. Step 4: Simplify right side
   12,615.96x = 72,897,397.68
5. Step 5: Solve for x
   x = 72,897,397.68/12,615.96
6. Step 6: Final answer
   x = 5,778.19