Finding the Fourth Proportional to 8,818.74, 12,168.98 and 5,281.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.74 : 12,168.98 = 5,281.86 : x
2. Step 2: Convert to fraction form
   8,818.74/12,168.98 = 5,281.86/x
3. Step 3: Cross multiply
   8,818.74x = 12,168.98 × 5,281.86
4. Step 4: Simplify right side
   8,818.74x = 64,274,822.29
5. Step 5: Solve for x
   x = 64,274,822.29/8,818.74
6. Step 6: Final answer
   x = 7,288.44