Finding the Fourth Proportional to 8,142.17, 12,222.99 and 4,856.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.17 : 12,222.99 = 4,856.81 : x
2. Step 2: Convert to fraction form
   8,142.17/12,222.99 = 4,856.81/x
3. Step 3: Cross multiply
   8,142.17x = 12,222.99 × 4,856.81
4. Step 4: Simplify right side
   8,142.17x = 59,364,678.95
5. Step 5: Solve for x
   x = 59,364,678.95/8,142.17
6. Step 6: Final answer
   x = 7,291.02