Finding the Fourth Proportional to 8,754.21, 12,081.03 and 5,399.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,754.21 : 12,081.03 = 5,399.25 : x
2. Step 2: Convert to fraction form
   8,754.21/12,081.03 = 5,399.25/x
3. Step 3: Cross multiply
   8,754.21x = 12,081.03 × 5,399.25
4. Step 4: Simplify right side
   8,754.21x = 65,228,501.23
5. Step 5: Solve for x
   x = 65,228,501.23/8,754.21
6. Step 6: Final answer
   x = 7,451.10