Finding the Fourth Proportional to 6,407.98, 8,840.64 and 3,754.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,407.98 : 8,840.64 = 3,754.42 : x
2. Step 2: Convert to fraction form
   6,407.98/8,840.64 = 3,754.42/x
3. Step 3: Cross multiply
   6,407.98x = 8,840.64 × 3,754.42
4. Step 4: Simplify right side
   6,407.98x = 33,191,467.61
5. Step 5: Solve for x
   x = 33,191,467.61/6,407.98
6. Step 6: Final answer
   x = 5,179.71