Finding the Fourth Proportional to 8,917.59, 12,305.91 and 4,938.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,917.59 : 12,305.91 = 4,938.47 : x
2. Step 2: Convert to fraction form
   8,917.59/12,305.91 = 4,938.47/x
3. Step 3: Cross multiply
   8,917.59x = 12,305.91 × 4,938.47
4. Step 4: Simplify right side
   8,917.59x = 60,772,305.83
5. Step 5: Solve for x
   x = 60,772,305.83/8,917.59
6. Step 6: Final answer
   x = 6,814.88