Finding the Fourth Proportional to 12,667.37, 19,003.10 and 3,902.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.37 : 19,003.10 = 3,902.28 : x
2. Step 2: Convert to fraction form
   12,667.37/19,003.10 = 3,902.28/x
3. Step 3: Cross multiply
   12,667.37x = 19,003.10 × 3,902.28
4. Step 4: Simplify right side
   12,667.37x = 74,155,397.56
5. Step 5: Solve for x
   x = 74,155,397.56/12,667.37
6. Step 6: Final answer
   x = 5,854.05