Finding the Fourth Proportional to 12,335.42, 18,505.41 and 3,904.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,335.42 : 18,505.41 = 3,904.05 : x
2. Step 2: Convert to fraction form
   12,335.42/18,505.41 = 3,904.05/x
3. Step 3: Cross multiply
   12,335.42x = 18,505.41 × 3,904.05
4. Step 4: Simplify right side
   12,335.42x = 72,246,009.41
5. Step 5: Solve for x
   x = 72,246,009.41/12,335.42
6. Step 6: Final answer
   x = 5,856.79