Finding the Fourth Proportional to 17,667.91, 26,491.48 and 7,138.27

Step by Step Solution

1. Step 1: Write the proportion equation
   17,667.91 : 26,491.48 = 7,138.27 : x
2. Step 2: Convert to fraction form
   17,667.91/26,491.48 = 7,138.27/x
3. Step 3: Cross multiply
   17,667.91x = 26,491.48 × 7,138.27
4. Step 4: Simplify right side
   17,667.91x = 189,103,243.35
5. Step 5: Solve for x
   x = 189,103,243.35/17,667.91
6. Step 6: Final answer
   x = 10,703.20