Finding the Fourth Proportional to 8,896.30, 12,276.56 and 5,120.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,896.30 : 12,276.56 = 5,120.06 : x
2. Step 2: Convert to fraction form
   8,896.30/12,276.56 = 5,120.06/x
3. Step 3: Cross multiply
   8,896.30x = 12,276.56 × 5,120.06
4. Step 4: Simplify right side
   8,896.30x = 62,856,675.21
5. Step 5: Solve for x
   x = 62,856,675.21/8,896.30
6. Step 6: Final answer
   x = 7,065.49