Finding the Fourth Proportional to 6,907.20, 10,355.94 and 3,012.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,907.20 : 10,355.94 = 3,012.72 : x
2. Step 2: Convert to fraction form
   6,907.20/10,355.94 = 3,012.72/x
3. Step 3: Cross multiply
   6,907.20x = 10,355.94 × 3,012.72
4. Step 4: Simplify right side
   6,907.20x = 31,199,547.56
5. Step 5: Solve for x
   x = 31,199,547.56/6,907.20
6. Step 6: Final answer
   x = 4,516.96