Finding the Fourth Proportional to 8,897.32, 12,277.86 and 4,917.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,897.32 : 12,277.86 = 4,917.72 : x
2. Step 2: Convert to fraction form
   8,897.32/12,277.86 = 4,917.72/x
3. Step 3: Cross multiply
   8,897.32x = 12,277.86 × 4,917.72
4. Step 4: Simplify right side
   8,897.32x = 60,379,077.68
5. Step 5: Solve for x
   x = 60,379,077.68/8,897.32
6. Step 6: Final answer
   x = 6,786.21