Finding the Fourth Proportional to 12,488.67, 18,733.86 and 4,168.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.67 : 18,733.86 = 4,168.35 : x
2. Step 2: Convert to fraction form
   12,488.67/18,733.86 = 4,168.35/x
3. Step 3: Cross multiply
   12,488.67x = 18,733.86 × 4,168.35
4. Step 4: Simplify right side
   12,488.67x = 78,089,285.33
5. Step 5: Solve for x
   x = 78,089,285.33/12,488.67
6. Step 6: Final answer
   x = 6,252.81