Finding the Fourth Proportional to 8,507.28, 12,764.72 and 4,345.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,507.28 : 12,764.72 = 4,345.10 : x
2. Step 2: Convert to fraction form
   8,507.28/12,764.72 = 4,345.10/x
3. Step 3: Cross multiply
   8,507.28x = 12,764.72 × 4,345.10
4. Step 4: Simplify right side
   8,507.28x = 55,463,899.32
5. Step 5: Solve for x
   x = 55,463,899.32/8,507.28
6. Step 6: Final answer
   x = 6,519.58