Finding the Fourth Proportional to 13,103.55, 19,667.67 and 8,724.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,103.55 : 19,667.67 = 8,724.06 : x
2. Step 2: Convert to fraction form
   13,103.55/19,667.67 = 8,724.06/x
3. Step 3: Cross multiply
   13,103.55x = 19,667.67 × 8,724.06
4. Step 4: Simplify right side
   13,103.55x = 171,581,933.14
5. Step 5: Solve for x
   x = 171,581,933.14/13,103.55
6. Step 6: Final answer
   x = 13,094.31