Finding the Fourth Proportional to 5,557.23, 7,671.15 and 3,789.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,557.23 : 7,671.15 = 3,789.81 : x
2. Step 2: Convert to fraction form
   5,557.23/7,671.15 = 3,789.81/x
3. Step 3: Cross multiply
   5,557.23x = 7,671.15 × 3,789.81
4. Step 4: Simplify right side
   5,557.23x = 29,072,200.98
5. Step 5: Solve for x
   x = 29,072,200.98/5,557.23
6. Step 6: Final answer
   x = 5,231.42