Finding the Fourth Proportional to 8,749.12, 12,063.98 and 7,150.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,749.12 : 12,063.98 = 7,150.81 : x
2. Step 2: Convert to fraction form
   8,749.12/12,063.98 = 7,150.81/x
3. Step 3: Cross multiply
   8,749.12x = 12,063.98 × 7,150.81
4. Step 4: Simplify right side
   8,749.12x = 86,267,171.66
5. Step 5: Solve for x
   x = 86,267,171.66/8,749.12
6. Step 6: Final answer
   x = 9,860.10