Finding the Fourth Proportional to 5,903.69, 8,142.12 and 3,545.37

Step by Step Solution

1. Step 1: Write the proportion equation
   5,903.69 : 8,142.12 = 3,545.37 : x
2. Step 2: Convert to fraction form
   5,903.69/8,142.12 = 3,545.37/x
3. Step 3: Cross multiply
   5,903.69x = 8,142.12 × 3,545.37
4. Step 4: Simplify right side
   5,903.69x = 28,866,827.98
5. Step 5: Solve for x
   x = 28,866,827.98/5,903.69
6. Step 6: Final answer
   x = 4,889.63