Finding the Fourth Proportional to 12,667.91, 19,002.12 and 3,902.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.91 : 19,002.12 = 3,902.82 : x
2. Step 2: Convert to fraction form
   12,667.91/19,002.12 = 3,902.82/x
3. Step 3: Cross multiply
   12,667.91x = 19,002.12 × 3,902.82
4. Step 4: Simplify right side
   12,667.91x = 74,161,853.98
5. Step 5: Solve for x
   x = 74,161,853.98/12,667.91
6. Step 6: Final answer
   x = 5,854.31