Finding the Fourth Proportional to 6,429.48, 8,874.06 and 4,187.35

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429.48 : 8,874.06 = 4,187.35 : x
2. Step 2: Convert to fraction form
   6,429.48/8,874.06 = 4,187.35/x
3. Step 3: Cross multiply
   6,429.48x = 8,874.06 × 4,187.35
4. Step 4: Simplify right side
   6,429.48x = 37,158,740.61
5. Step 5: Solve for x
   x = 37,158,740.61/6,429.48
6. Step 6: Final answer
   x = 5,779.44