Finding the Fourth Proportional to 12,901.91, 19,352.45 and 3,667.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,901.91 : 19,352.45 = 3,667.91 : x
2. Step 2: Convert to fraction form
   12,901.91/19,352.45 = 3,667.91/x
3. Step 3: Cross multiply
   12,901.91x = 19,352.45 × 3,667.91
4. Step 4: Simplify right side
   12,901.91x = 70,982,929.78
5. Step 5: Solve for x
   x = 70,982,929.78/12,901.91
6. Step 6: Final answer
   x = 5,501.74