Finding the Fourth Proportional to 8,500.32, 12,756.63 and 4,809.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,500.32 : 12,756.63 = 4,809.76 : x
2. Step 2: Convert to fraction form
   8,500.32/12,756.63 = 4,809.76/x
3. Step 3: Cross multiply
   8,500.32x = 12,756.63 × 4,809.76
4. Step 4: Simplify right side
   8,500.32x = 61,356,328.71
5. Step 5: Solve for x
   x = 61,356,328.71/8,500.32
6. Step 6: Final answer
   x = 7,218.12