Finding the Fourth Proportional to 8,740.64, 12,063.12 and 5,015.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,740.64 : 12,063.12 = 5,015.36 : x
2. Step 2: Convert to fraction form
   8,740.64/12,063.12 = 5,015.36/x
3. Step 3: Cross multiply
   8,740.64x = 12,063.12 × 5,015.36
4. Step 4: Simplify right side
   8,740.64x = 60,500,889.52
5. Step 5: Solve for x
   x = 60,500,889.52/8,740.64
6. Step 6: Final answer
   x = 6,921.79