Finding the Fourth Proportional to 8,762.17, 13,141.47 and 3,213.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,762.17 : 13,141.47 = 3,213.62 : x
2. Step 2: Convert to fraction form
   8,762.17/13,141.47 = 3,213.62/x
3. Step 3: Cross multiply
   8,762.17x = 13,141.47 × 3,213.62
4. Step 4: Simplify right side
   8,762.17x = 42,231,690.82
5. Step 5: Solve for x
   x = 42,231,690.82/8,762.17
6. Step 6: Final answer
   x = 4,819.78