Finding the Fourth Proportional to 9,262.56, 12,782.28 and 5,070.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262.56 : 12,782.28 = 5,070.72 : x
2. Step 2: Convert to fraction form
   9,262.56/12,782.28 = 5,070.72/x
3. Step 3: Cross multiply
   9,262.56x = 12,782.28 × 5,070.72
4. Step 4: Simplify right side
   9,262.56x = 64,815,362.84
5. Step 5: Solve for x
   x = 64,815,362.84/9,262.56
6. Step 6: Final answer
   x = 6,997.56