Finding the Fourth Proportional to 8,373.56, 12,561.09 and 5,979.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,373.56 : 12,561.09 = 5,979.29 : x
2. Step 2: Convert to fraction form
   8,373.56/12,561.09 = 5,979.29/x
3. Step 3: Cross multiply
   8,373.56x = 12,561.09 × 5,979.29
4. Step 4: Simplify right side
   8,373.56x = 75,106,399.83
5. Step 5: Solve for x
   x = 75,106,399.83/8,373.56
6. Step 6: Final answer
   x = 8,969.47