Finding the Fourth Proportional to 12,607.71, 18,914.37 and 3,843.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,607.71 : 18,914.37 = 3,843.30 : x
2. Step 2: Convert to fraction form
   12,607.71/18,914.37 = 3,843.30/x
3. Step 3: Cross multiply
   12,607.71x = 18,914.37 × 3,843.30
4. Step 4: Simplify right side
   12,607.71x = 72,693,598.22
5. Step 5: Solve for x
   x = 72,693,598.22/12,607.71
6. Step 6: Final answer
   x = 5,765.81