Finding the Fourth Proportional to 8,667.30, 12,992.58 and 5,538.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.30 : 12,992.58 = 5,538.54 : x
2. Step 2: Convert to fraction form
   8,667.30/12,992.58 = 5,538.54/x
3. Step 3: Cross multiply
   8,667.30x = 12,992.58 × 5,538.54
4. Step 4: Simplify right side
   8,667.30x = 71,959,924.03
5. Step 5: Solve for x
   x = 71,959,924.03/8,667.30
6. Step 6: Final answer
   x = 8,302.46