Finding the Fourth Proportional to 8,219.17, 12,331.86 and 4,934.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,219.17 : 12,331.86 = 4,934.55 : x
2. Step 2: Convert to fraction form
   8,219.17/12,331.86 = 4,934.55/x
3. Step 3: Cross multiply
   8,219.17x = 12,331.86 × 4,934.55
4. Step 4: Simplify right side
   8,219.17x = 60,852,155.09
5. Step 5: Solve for x
   x = 60,852,155.09/8,219.17
6. Step 6: Final answer
   x = 7,403.69