Finding the Fourth Proportional to 13,667.49, 18,861.95 and 8,363.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,667.49 : 18,861.95 = 8,363.34 : x
2. Step 2: Convert to fraction form
   13,667.49/18,861.95 = 8,363.34/x
3. Step 3: Cross multiply
   13,667.49x = 18,861.95 × 8,363.34
4. Step 4: Simplify right side
   13,667.49x = 157,748,921.82
5. Step 5: Solve for x
   x = 157,748,921.82/13,667.49
6. Step 6: Final answer
   x = 11,541.91