Finding the Fourth Proportional to 12,669.36, 19,003.56 and 3,904.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.36 : 19,003.56 = 3,904.05 : x
2. Step 2: Convert to fraction form
   12,669.36/19,003.56 = 3,904.05/x
3. Step 3: Cross multiply
   12,669.36x = 19,003.56 × 3,904.05
4. Step 4: Simplify right side
   12,669.36x = 74,190,848.42
5. Step 5: Solve for x
   x = 74,190,848.42/12,669.36
6. Step 6: Final answer
   x = 5,855.93