Finding the Fourth Proportional to 8,426.16, 12,632.76 and 5,137.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,426.16 : 12,632.76 = 5,137.56 : x
2. Step 2: Convert to fraction form
   8,426.16/12,632.76 = 5,137.56/x
3. Step 3: Cross multiply
   8,426.16x = 12,632.76 × 5,137.56
4. Step 4: Simplify right side
   8,426.16x = 64,901,562.47
5. Step 5: Solve for x
   x = 64,901,562.47/8,426.16
6. Step 6: Final answer
   x = 7,702.39