Finding the Fourth Proportional to 8,377.42, 12,561.35 and 3,443

Step by Step Solution

1. Step 1: Write the proportion equation
   8,377.42 : 12,561.35 = 3,443 : x
2. Step 2: Convert to fraction form
   8,377.42/12,561.35 = 3,443/x
3. Step 3: Cross multiply
   8,377.42x = 12,561.35 × 3,443
4. Step 4: Simplify right side
   8,377.42x = 43,248,710.84
5. Step 5: Solve for x
   x = 43,248,710.84/8,377.42
6. Step 6: Final answer
   x = 5,162.53