Finding the Fourth Proportional to 6,426.72, 8,871.55 and 4,657.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.72 : 8,871.55 = 4,657.98 : x
2. Step 2: Convert to fraction form
   6,426.72/8,871.55 = 4,657.98/x
3. Step 3: Cross multiply
   6,426.72x = 8,871.55 × 4,657.98
4. Step 4: Simplify right side
   6,426.72x = 41,323,490.82
5. Step 5: Solve for x
   x = 41,323,490.82/6,426.72
6. Step 6: Final answer
   x = 6,429.95