Finding the Fourth Proportional to 13,374.96, 18,457.74 and 8,667.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,374.96 : 18,457.74 = 8,667.42 : x
2. Step 2: Convert to fraction form
   13,374.96/18,457.74 = 8,667.42/x
3. Step 3: Cross multiply
   13,374.96x = 18,457.74 × 8,667.42
4. Step 4: Simplify right side
   13,374.96x = 159,980,984.83
5. Step 5: Solve for x
   x = 159,980,984.83/13,374.96
6. Step 6: Final answer
   x = 11,961.23