Finding the Fourth Proportional to 8,667.79, 13,005.30 and 5,551.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.79 : 13,005.30 = 5,551.30 : x
2. Step 2: Convert to fraction form
   8,667.79/13,005.30 = 5,551.30/x
3. Step 3: Cross multiply
   8,667.79x = 13,005.30 × 5,551.30
4. Step 4: Simplify right side
   8,667.79x = 72,196,321.89
5. Step 5: Solve for x
   x = 72,196,321.89/8,667.79
6. Step 6: Final answer
   x = 8,329.27