Finding the Fourth Proportional to 8,320.32, 12,478.35 and 2,475.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.32 : 12,478.35 = 2,475.56 : x
2. Step 2: Convert to fraction form
   8,320.32/12,478.35 = 2,475.56/x
3. Step 3: Cross multiply
   8,320.32x = 12,478.35 × 2,475.56
4. Step 4: Simplify right side
   8,320.32x = 30,890,944.61
5. Step 5: Solve for x
   x = 30,890,944.61/8,320.32
6. Step 6: Final answer
   x = 3,712.71